Basic and Diluted Net Loss Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:
Income (loss) from continuing operations	$ 7,730	$ (11,945)	$ (2,753)	$ (45,575)
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	(1,400)	(1,151)	5,543	(2,661)
Net income (loss)	$ 6,330	$ (13,096)	$ 2,790	$ (48,236)
Weighted-average shares outstanding:
Basic	45,400	45,092	45,337	45,057
Assumed conversion of employee stock grants	430	0	463	0
Assumed conversion of warrants	6,691	0	6,762	0
Diluted (in shares)	52,521	45,092	52,562	45,057
Net income (loss) per basic share:
Net income (loss) from continuing operations	$ 0.17	$ (0.26)	$ (0.06)	$ (1.01)
Net income (loss) from discontinued operations	$ (0.03)	$ (0.03)	$ 0.12	$ (0.06)
Net income (loss)	$ 0.14	$ (0.29)	$ 0.06	$ (1.07)
Net income (loss) per diluted share:
Net income (loss) from continuing operations	$ 0.15	$ (0.26)	$ (0.05)	$ (1.01)
Net income (loss) from discontinued operations	$ (0.03)	$ (0.03)	$ 0.11	$ (0.06)
Net income (loss)	$ 0.12	$ (0.29)	$ 0.06	$ (1.07)