Annual report pursuant to Section 13 and 15(d)

Description of Business and Summary of Significant Accounting Policies (Details)

Description of Business and Summary of Significant Accounting Policies (Details) (USD $)	0 Months Ended	12 Months Ended
	Jul. 12, 2012	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Minimum [Member] Patents [Member]	Mar. 31, 2013 Minimum [Member] Trademarks [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Maximum [Member] Patents [Member]	Mar. 31, 2013 Maximum [Member] Trademarks [Member]	Mar. 31, 2013 Furniture and Machinery and Equipment [Member]	Mar. 31, 2013 Computer and Software [Member] Minimum [Member]	Mar. 31, 2013 Computer and Software [Member] Maximum [Member]	Mar. 31, 2013 Leaseholds Improvements [Member]	Mar. 31, 2013 Accounts Receivable [Member] Customer Concentration Risk [Member] Customer	Mar. 31, 2013 Restricted Stock Units (RSUs) [Member]	Mar. 31, 2013 Sequel Power [Member]	Mar. 31, 2012 Sequel Power [Member]	Mar. 31, 2011 Sequel Power [Member]	Jan. 14, 2011 Sequel Power [Member]
Schedule of Equity Method Investments [Line Items]
Equity investment																		$ 2,000,000	$ 2,000,000
Ownership interest (in hundredths)																		25.00%	25.00%
Warrants cancelled (in shares)																(44,578)	(48,310)
Business Acquisition [Line Items]
Business acquisition effective date	Jul. 12, 2012
Date of acquisition agreement	Jun. 29, 2012
Percentage of interest acquired (in hundredth)	100.00%
Number of shares issuable to acquire business (in shares)	236,433
Shares issued specified as percentage of total shares outstanding (in hundredths)	14.00%
Common stock consideration	932,000
Promissory note assumed	500,000
Interest rate on promissory note (in hundredths)	0.28%
Bridge loan included as part of purchase price	300,000
RSUs and options granted as "inducement grants" to newly hired management (in shares)		368,417
Vesting period of equity awards		4 years
Aggregate RSUs forfeited (in shares)															215,475
Noncompetition period		3 years
Stockholders Agreement Period of transfer restrictions and voting provisions		2 years
Change in the fair value of warrants [Abstract]
Balance at the beginning of the period		19,000	26,000
Change in fair value recorded in earnings, including expirations		(9,000)	(7,000)
Balance at the end of the period		10,000	19,000
Investment in Unconsolidated Affiliate [Abstract]
Estimated useful life of the underlying intangibles		10 years			3 years	3 years		10 years	10 years
Net difference between investment in unconsolidated affiliates and the underlying equity of unconsolidated affiliates		0
Amortization expense		0
Equity method investment estimated fair value		0	0
Impairment of unconsolidated affiliate		0	1,377,000
Investment in Convertible Promissory Note [Abstract]
Interest rate on note receivable (in hundredths)		10.00%
Maturity date		Nov. 15, 2014
Convertible promissory note balance		345,000	31,000
Original amount		300,000
Accrued interest on note receivable		45,000	12,000
Concentration Risk [Line Items]
Number of customers														1
Concentration risk (in hundredths)														100.00%
Accounts receivable		250,000	7,000
Property, Plant and Equipment [Line Items]
Useful Life				3 years			7 years			7 years	3 years	5 years	5 years
Finite-Lived Intangible Assets [Line Items]
Useful life		10 years			3 years	3 years		10 years	10 years
Impairment of intangible assets		0	0
Impairment of Long-Lived Assets [Abstract]
Impairment of long-lived assets		17,000	51,000
Pension Obligations [Abstract]
Pension liability		0	0
Accounts Receivable - Allowance for Sales Returns and Doubtful Accounts [Abstract]
Reserves for potential credit losses		0	0
Accounts receivable		$ 250,000	$ 7,000
Earnings Per Share [Abstract]
Reverse stock split		1-for-5
Stock-Based Compensation [Abstract]
Vesting period of equity awards		4 years
Stock options expiry period		10 years
Purchase price of shares to fair market value (in hundredths)		85.00%