Share-based Compensation (Details) (USD $)	6 Months Ended			6 Months Ended				12 Months Ended	6 Months Ended			12 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Sep. 30, 2013 Stock Options [Member]	Sep. 30, 2012 Stock Options [Member]	Mar. 31, 2013 Stock Options [Member]	Sep. 30, 2013 Stock Options [Member] Maximum [Member]	Sep. 30, 2012 Stock Options [Member] Consultants [Member]	Sep. 30, 2013 Restricted Stock [Member]	Mar. 31, 2013 Restricted Stock [Member]	Jul. 23, 2013 Stock Compensation Plan [Member] New Chief Executive [Member]	Sep. 30, 2013 2006 Amended Stock and Incentive Plan [Member] Plan	Sep. 30, 2013 2006 Amended Stock and Incentive Plan [Member] Stock Options [Member] Minimum [Member]	Sep. 30, 2013 2006 Amended Stock and Incentive Plan [Member] Stock Options [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of active plans for share-based compensation grants														1
Number of shares reserved for share-based grants (in shares)														3,450,000
Additional shares approved for share-based grants (in shares)														750,000
Stock grants (in shares)	21,467,390		21,005,582										300,000
Shares available for grant (in shares)														834,467
Term of share-based payment award (in years)															5 years	7 years
Vesting period																3 years
Share-based compensation and consulting expense	$ 921,000	$ 355,000								$ 2,000
Weighted-average assumptions used to value the options granted [Abstract]
Expected life in years						4 years 6 months 4 days	5 years 7 months 2 days
Risk free interest rate (in hundredths)						1.35%	0.95%
Expected volatility (in hundredths)						89.43%	91.16%
Expected dividend yield (in hundredths)						0.00%	0.00%
Weighted-average grant date fair value (in dollars per share)						$ 1.65	$ 2.61
Forfeiture rate (in hundredths)									6.30%
Stock options, number of shares [Roll Forward]
Outstanding, beginning of period (in shares)						2,015,889
Options granted (in shares)						855,125
Options exercised (in shares)						(130,132)
Options surrendered (in shares)						(260,199)
Outstanding, end of period (in shares)						2,480,683		2,015,889
Exercisable, end of period (in shares)						1,455,279
Stock options, weighted average exercise price [Roll Forward]
Outstanding, beginning of period (in dollars per share)						$ 3.51
Options granted (in dollars per share)						$ 2.47
Options exercised (in dollars per share)						$ 0.88
Options surrendered (in dollars per share)						$ 3.76
Outstanding, end of period (in dollars per share)						$ 3.26		$ 3.51
Exercisable, end of period (in dollars per share)						$ 3.69
Stock options, additional disclosures [Abstract]
Outstanding, aggregate intrinsic value, end of period						1,657		598
Exercisable, aggregate intrinsic value, end of period						859
Outstanding, weighted average remaining life in years						3 years 10 months 28 days		2 years 7 months 20 days
Exercisable, Weighted average remaining life in years						1 year 11 months 23 days
Fair value of stock options vested						315,000	386,000
Forfeiture risk, expiration period				3 years	4 years
Restricted shares, number of shares [Roll Forward]
Balance, beginning of period (in shares)											180,085
Shares granted (in shares)											121,750
Shares vested (in shares)											(29,197)
Shares forfeited (in shares)											(90,074)
Balance, end of period (in shares)											182,564	180,085
Restricted shares, weighted average grant date fair value [Roll Forward]
Balance, beginning of period (in dollars per share)											$ 4.39
Shares granted (in dollars per share)											$ 3.06
Shares vested (in dollars per share)											$ 4.71
Shares forfeited (in dollars per share)											$ 4.38
Balance, end of period (in dollars per share)											$ 3.45	$ 4.39
Restricted shares, additional disclosures [Abstract]
Weighted average remaining life in years											2 years 5 months 12 days	1 year 6 months
Outstanding, Aggregate intrinsic value											630	790
Unrecognized share-based compensation expense	$ 2,137,000
Unrecognized compensation expense, weighted average period of recognition	2 years 7 months 6 days