|
Basis of Presentation (Details) (USD $)
|
3 Months Ended |
6 Months Ended |
12 Months Ended |
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2010
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Mar. 31, 2012
|
Mar. 31, 2011
|
| Basis of Presentation [Abstract] |
|
|
|
|
|
|
|
| Net income/(loss) |
$ 1,284,000
|
$ 476,000
|
|
$ 1,963,000
|
$ 1,470,000
|
|
|
| Cash used in operating activities |
|
|
|
1,708,000
|
1,644,000
|
|
|
| Number of clinical and scientific advisors |
|
|
|
50
|
|
|
|
| Value added data opportunity |
|
|
|
300,000,000,000
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
|
|
|
|
| Accounts receivable, net, current |
75,000
|
|
|
75,000
|
|
|
|
| Concentration risk, percentage (in hundredths) |
|
|
|
|
100.00%
|
|
|
| Note Receivable [Abstract] |
|
|
|
|
|
|
|
| Balances of notes receivable, net |
0
|
|
|
0
|
|
|
|
| Interest rate on promissory note (in hundredths) |
0.28%
|
|
|
0.28%
|
|
|
|
| Promissory note maturity date |
|
|
|
Nov.
07,
2012
|
|
|
|
| Promissory Note [Abstract] |
|
|
|
|
|
|
|
| Business Acquisition, Effective Date of Acquisition |
|
|
|
Jul. 12,
2012
|
|
|
|
| Business Acquisition, Date of Acquisition Agreement |
|
|
|
Jun. 29,
2012
|
|
|
|
| Business acquisition, purchase price allocation, indebtedness |
500,000
|
|
|
500,000
|
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
|
|
|
|
| Warrants outstanding to purchase shares of common stock (in shares) |
285,454
|
|
|
285,454
|
|
|
|
| Investment warrants expiration date range start |
|
|
|
Feb.
01,
2010
|
|
|
|
| Investment warrants expiration date range end |
|
|
|
Sep.
01,
2013
|
|
|
|
| Reclassification from additional paid in capital to beginning accumulated deficit |
346,000
|
|
|
346,000
|
|
|
|
| Reclassification from additional paid in capital to common stock warrant liability |
502,000
|
|
|
502,000
|
|
|
|
| Fair value assumptions, risk free interest rate (in hundredths) |
|
|
|
0.62%
|
|
|
2.24%
|
| Fair value assumptions, expected term |
|
|
|
11 months 8 days
|
|
|
1 year 1 month 6 days
|
| Fair value assumptions, weighted average volatility rate (in hundredths) |
|
|
|
157.00%
|
|
|
79.10%
|
| Fair value assumptions, expected dividend rate (in hundredths) |
|
|
|
0.00%
|
|
|
0.00%
|
| Fair value of warrants |
16,000
|
|
|
16,000
|
|
|
|
| Non cash gains on warrants |
2,000
|
3,000
|
14,000
|
3,000
|
14,000
|
|
|
| Investment in Unconsolidated Affiliate [Abstract] |
|
|
|
|
|
|
|
| Estimated useful life of the underlying intangibles |
|
|
|
10 years
|
|
|
|
| Net difference between investment in unconsolidated affiliates and the underlying equity of unconsolidated affiliates |
|
|
|
|
|
0
|
|
| Amortization expense |
0
|
43,000
|
|
0
|
86,000
|
|
|
| Estimated fair value of investment |
|
|
|
|
|
0
|
|
| Asset Impairment Charges |
|
|
|
|
|
1,377,000
|
|
| Book value of investments |
0
|
|
|
0
|
|
|
|
| Fair Value Measurements [Abstract] |
|
|
|
|
|
|
|
| Number of level of fair value hierarchy |
|
|
|
3
|
|
|
|
| Changes in the fair value of warrants [Roll Forward] |
|
|
|
|
|
|
|
| Balance at the beginning of the period |
|
|
|
19,000
|
26,000
|
26,000
|
|
| Change in fair value recorded in earnings |
|
|
|
(3,000)
|
(14,000)
|
|
|
| Balance at the end of the period |
16,000
|
12,000
|
|
16,000
|
12,000
|
19,000
|
26,000
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
|
|
| Amortization period for intangible asset |
|
|
|
10 years
|
|
|
|
| Carrying value of internally developed intangible assets |
|
|
|
|
|
|
0
|
| Number of offered lots awarded |
|
|
|
2
|
|
|
|
| Number of offered lots |
|
|
|
4
|
|
|
|
| Consideration received |
3,600,000
|
|
|
3,600,000
|
|
|
|
| Number of patents |
|
|
|
35
|
|
|
|
| Amortization of Intangible Assets |
20,000
|
|
|
20,000
|
0
|
|
|
| Impairment of Long-Lived Assets [Abstract] |
|
|
|
|
|
|
|
| Impairment charges for fixed assets |
17,000
|
17,000
|
|
0
|
51,000
|
|
|
| Share-based Compensation [Abstract] |
|
|
|
|
|
|
|
| Vesting period of equity awards |
|
|
|
4 years
|
|
|
|
| Stock options expiry period |
|
|
|
10 years
|
|
|
|
| Purchase price of shares in terms of fair market value (in hundredths) |
|
|
|
85.00%
|
|
|
|
| Total stock-based compensation expense related to stock options and restricted stock units |
|
|
|
312,000
|
80,000
|
|
|
| Total compensation expense related to non-vested stock options and RSUs not yet recognized |
1,564,000
|
|
|
1,564,000
|
|
|
|
| Period of recognition of total unrecognized compensation cost |
|
|
|
3 years 8 months 19 days
|
|
|
|
| Number of employees stock purchase plan awards granted during the period (in shares) |
0
|
|
|
0
|
|
|
|
| Weighted Average Exercise Price [Abstract] |
|
|
|
|
|
|
|
| Expired (in dollars per share) |
|
|
|
$ 0
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Total unrecognized compensation cost related to outstanding options and warrants |
430,000
|
|
|
430,000
|
|
|
|
| Weighted Average Grant Date Fair Value [Abstract] |
|
|
|
|
|
|
|
| Period of recognition of total unrecognized compensation cost |
|
|
|
3 years 8 months 19 days
|
|
|
|
|
Range $2.90 to $6.00 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 2.90
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 6.00
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
108,830
|
|
|
108,830
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
9 years 8 months 5 days
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 3.94
|
|
|
$ 3.94
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
22,079
|
|
|
22,079
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 4.07
|
|
|
$ 4.07
|
|
|
|
|
Range $6.25 to $11.70 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 6.25
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 11.70
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
54,056
|
|
|
54,056
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
5 years 2 months 9 days
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 11.53
|
|
|
$ 11.53
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
52,235
|
|
|
52,235
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 11.53
|
|
|
$ 11.53
|
|
|
|
|
Range $17.80 to $28.10 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 17.80
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 28.10
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
49,648
|
|
|
49,648
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
3 years 11 months 23 days
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 21.73
|
|
|
$ 21.73
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
49,623
|
|
|
49,623
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 21.73
|
|
|
$ 21.73
|
|
|
|
|
Range $34.20 to $61.80 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 34.20
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 61.80
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
14,006
|
|
|
14,006
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
2 years 8 months 1 day
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 43.95
|
|
|
$ 43.95
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
13,998
|
|
|
13,998
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 43.95
|
|
|
$ 43.95
|
|
|
|
|
Range $61.94 to $151.94 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 61.94
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 151.94
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
854
|
|
|
854
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
1 year 11 months 1 day
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 89.52
|
|
|
$ 89.52
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
832
|
|
|
832
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 89.52
|
|
|
$ 89.52
|
|
|
|
|
Range $152.21 to $285 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 152.21
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 285.00
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
58
|
|
|
58
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
11 months 9 days
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 174.00
|
|
|
$ 174.00
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
46
|
|
|
46
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 174.00
|
|
|
$ 174.00
|
|
|
|
|
Range $286.72 to $300.27 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 286.72
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 300.27
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
2
|
|
|
2
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
0 years
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 0
|
|
|
$ 0
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
0
|
|
|
0
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 0
|
|
|
$ 0
|
|
|
|
|
Range $2.90 to $300.27 [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
|
|
|
|
|
|
|
| Range of Exercise Prices, Lower Range Limit (in dollars per share) |
|
|
|
$ 2.90
|
|
|
|
| Range of Exercise Prices, Upper Range Limit (in dollars per share) |
|
|
|
$ 300.27
|
|
|
|
| Number Outstanding As of September 30, 2012 (in shares) |
227,454
|
|
|
227,454
|
|
|
|
| Weighted Average Remaining Contractual Term |
|
|
|
6 years 10 months 24 days
|
|
|
|
| Weighted Average Exercise Price (in dollars per share) |
$ 12.44
|
|
|
$ 12.44
|
|
|
|
| Number Exercisable As of September 30, 2012 (in shares) |
138,813
|
|
|
138,813
|
|
|
|
| Weighted Average Exercise Price As of September 30, 2012 (in dollars per share) |
$ 17.78
|
|
|
$ 17.78
|
|
|
|
|
Stock Options [Member]
|
|
|
|
|
|
|
|
| Valuation assumptions to estimate the fair value of options and ESPP [Abstract] |
|
|
|
|
|
|
|
| Expected life (years) |
|
|
|
6 years
|
6 years
|
|
|
| Volatility (in hundredths) |
|
|
|
157.50%
|
151.30%
|
|
|
| Risk-free interest rate (in hundredths) |
|
|
|
0.62%
|
0.96%
|
|
|
| Dividend yield (in hundredths) |
|
|
|
0.00%
|
0.00%
|
|
|
|
Employees stock purchase plan [Member]
|
|
|
|
|
|
|
|
| Valuation assumptions to estimate the fair value of options and ESPP [Abstract] |
|
|
|
|
|
|
|
| Expected life (years) |
|
|
|
6 months
|
6 months
|
|
|
| Volatility (in hundredths) |
|
|
|
94.70%
|
141.10%
|
|
|
| Risk-free interest rate (in hundredths) |
|
|
|
0.10%
|
0.02%
|
|
|
| Dividend yield (in hundredths) |
|
|
|
0.00%
|
0.00%
|
|
|
|
Stock options and warrants [Member]
|
|
|
|
|
|
|
|
| Stock option and warrant activity [Roll Forward] |
|
|
|
|
|
|
|
| Beginning outstanding (in shares) |
127,833
|
|
|
|
|
|
|
| Granted (in shares) |
136,500
|
|
|
|
|
|
|
| Forfeited (in shares) |
(36,379)
|
|
|
|
|
|
|
| Expired (in shares) |
(500)
|
|
|
|
|
|
|
| Ending outstanding (in shares) |
227,454
|
|
|
227,454
|
|
|
|
| Ending vested and expected to vest (in shares) |
227,385
|
|
|
227,385
|
|
|
|
| Ending exercisable (in shares) |
138,813
|
|
|
138,813
|
|
|
|
| Weighted Average Exercise Price [Abstract] |
|
|
|
|
|
|
|
| Beginning outstanding (in dollars per share) |
$ 19.24
|
|
|
|
|
|
|
| Granted (in dollars per share) |
$ 3.92
|
|
|
|
|
|
|
| Forfeited (in dollars per share) |
$ 4.02
|
|
|
|
|
|
|
| Ending outstanding (in dollars per share) |
$ 12.46
|
|
|
$ 12.46
|
|
|
|
| Ending vested and expected to vest (in dollars per share) |
$ 12.44
|
|
|
$ 12.44
|
|
|
|
| Ending exercisable (in dollars per share) |
$ 17.78
|
|
|
$ 17.78
|
|
|
|
| Weighted Average Remaining Contractual Term [Abstract] |
|
|
|
|
|
|
|
| Ending outstanding |
6 years 10 months 24 days
|
|
|
|
|
|
|
| Ending vested and expected to vest |
6 years 10 months 28 days
|
|
|
|
|
|
|
| Ending exercisable |
5 years 1 month 13 days
|
|
|
|
|
|
|
| Aggregate Intrinsic Value [Abstract] |
|
|
|
|
|
|
|
| Ending outstanding |
0
|
|
|
0
|
|
|
|
| Ending vested and expected to vest |
0
|
|
|
0
|
|
|
|
| Ending exercisable |
0
|
|
|
0
|
|
|
|
|
Restricted Stock Units (RSUs) [Member]
|
|
|
|
|
|
|
|
| Share-based Compensation [Abstract] |
|
|
|
|
|
|
|
| Period of recognition of total unrecognized compensation cost |
|
|
|
3 years 3 months 14 days
|
|
|
|
| Number of Shares [Abstract] |
|
|
|
|
|
|
|
| Balance, March 31, 2012 (in shares) |
236,541
|
|
|
|
|
|
|
| Granted (in shares) |
278,417
|
|
|
|
|
|
|
| Forfeited (in shares) |
(64,285)
|
|
|
|
|
|
|
| Vested (in shares) |
(61,189)
|
|
|
|
|
|
|
| Balance, September 30, 2012 (in shares) |
389,484
|
|
|
389,484
|
|
|
|
| Weighted Average Grant Date Fair Value [Abstract] |
|
|
|
|
|
|
|
| Balance March 31, 2012 (in dollars per share) |
$ 2.37
|
|
|
|
|
|
|
| Granted (in dollars per share) |
$ 3.86
|
|
|
|
|
|
|
| Forfeited (in dollars per share) |
$ 2.07
|
|
|
|
|
|
|
| Vested (in dollars per share) |
$ 2.63
|
|
|
|
|
|
|
| Balance, September 30, 2012 (in dollars per share) |
$ 3.29
|
|
|
$ 3.29
|
|
|
|
| Total unrecognized compensation cost related to outstanding RSUs |
$ 1,134,000
|
|
|
$ 1,134,000
|
|
|
|
| Period of recognition of total unrecognized compensation cost |
|
|
|
3 years 3 months 14 days
|
|
|
|
|
Maximum [Member]
|
|
|
|
|
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
|
|
|
|
| Exercise price of warrants (in dollars per share) |
$ 495.00
|
|
|
$ 495.00
|
|
|
|
| Investment in Unconsolidated Affiliate [Abstract] |
|
|
|
|
|
|
|
| Estimated useful life of the underlying intangibles |
|
|
|
10 years
|
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
|
|
| Amortization period for intangible asset |
|
|
|
10 years
|
|
|
|
|
Minimum [Member]
|
|
|
|
|
|
|
|
| Class of Warrant or Right [Line Items] |
|
|
|
|
|
|
|
| Exercise price of warrants (in dollars per share) |
$ 30.00
|
|
|
$ 30.00
|
|
|
|
| Investment in Unconsolidated Affiliate [Abstract] |
|
|
|
|
|
|
|
| Estimated useful life of the underlying intangibles |
|
|
|
3 years
|
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
|
|
|
|
| Amortization period for intangible asset |
|
|
|
3 years
|
|
|
|