Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income (Loss) Per Share [Abstract]
Income from continuing operations	$ 2,164,000	$ 6,503,000	$ 2,267,000	$ 8,870,000
Income (loss) from discontinued operations	0	(15,436,000)	100,877,000	(27,665,000)
Net income (loss)	$ 2,164,000	$ (8,933,000)	$ 103,144,000	$ (18,795,000)
Basic (in shares)	14,460,979	14,456,921	14,460,979	14,192,235
Effect of dilutive stock options and warrants (in shares)	93,478	44,231	151,309	56,480
Diluted (in shares)	14,554,457	14,501,152	14,612,288	14,248,715
Net income (loss) per share [Abstract]
Basic net income per share from continuing operations (in dollars per share)	$ 0.15	$ 0.45	$ 0.16	$ 0.63
Basic net income (loss) per share from discontinued operations (in dollars per share)	$ 0	$ (1.07)	$ 6.97	$ (1.95)
Basic net income (loss) per share (in dollars per share)	$ 0.15	$ (0.62)	$ 7.13	$ (1.32)
Diluted net income per share from continuing operations (in dollars per share)	$ 0.15	$ 0.45	$ 0.16	$ 0.62
Diluted net income (loss) per share from discontinued operations (in dollars per share)	$ 0	$ (1.07)	$ 6.90	$ (1.94)
Diluted net income (loss) per share (in dollars per share)	$ 0.15	$ (0.62)	$ 7.06	$ (1.32)
Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price of antidilutive options and warrants (in dollars per share)	$ 9.85	$ 4.60	$ 8.70	$ 5.83
Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price of antidilutive options and warrants (in dollars per share)	$ 15.06	$ 15.06	$ 15.06	$ 15.06
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share (in shares)	755,334	1,311,534	1,034,534	1,279,534
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from computation of earnings per share (in shares)		735,484		735,484