Income/Loss Per Share - Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Numerator
Income (loss) from continuing operations	$ (15,173)	$ (8,600)	$ 7,194	$ (37,050)	$ (19,847)	$ 3,078	$ 7,730	$ (10,483)	$ (53,629)	$ (19,522)	$ (64,869)
Income (loss) from discontinued operations, net of income tax expense (benefit) of $0, $1,976, and $(98), respectively	0	0	0	0	0	(164)	(1,400)	6,943	0	5,379	(3,634)
Net income (loss)	$ (15,173)	$ (8,600)	$ 7,194	$ (37,050)	$ (19,847)	$ 2,914	$ 6,330	$ (3,540)	$ (53,629)	$ (14,143)	$ (68,503)
Weighted-average common shares outstanding:
Basic (in shares)									46,004	45,381	45,102
Assumed conversion of employee stock options (in shares)									0	0	0
Assumed conversion of Platinum Warrant (in shares)									0	0	0
Weighted-average shares outstanding (diluted)									46,004	45,381	45,102
Net income (loss) per basic share:
Loss from continuing operations (in dollars per share)	$ (0.33)	$ (0.19)	$ 0.16	$ (0.81)	$ (0.44)	$ 0.07	$ 0.17	$ (0.23)	$ (1.17)	$ (0.43)	$ (1.44)
Income (loss) from discontinued operations (in dollars per share)	0.00	0.00	0.00	0.00	0.00	0.00	(0.03)	0.15	0.00	0.12	(0.08)
Net income (loss) (in dollars per share)	(0.33)	(0.19)	0.16	(0.81)	(0.44)	0.07	0.14	(0.08)	(1.17)	(0.31)	(1.52)
Net income (loss) per diluted share:
Loss from continuing operations (in dollars per share)	(0.33)	(0.19)	0.14	(0.81)	(0.44)	0.06	0.15	(0.23)	(1.17)	(0.43)	(1.44)
Income (loss) from discontinued operations (in dollars per share)	0.00	0.00	0.00	0.00	0.00	0.00	(0.03)	0.15	0.00	0.12	(0.08)
Net income (loss) (in dollars per share)	$ (0.33)	$ (0.19)	$ 0.14	$ (0.81)	$ (0.44)	$ 0.06	$ 0.12	$ (0.08)	$ (1.17)	$ (0.31)	$ (1.52)