Quarterly Financial Data (Unaudited) - Schedule of Quarterly Financial Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Effect of Fourth Quarter Events [Line Items]
Total revenues									$ 710,135	$ 964,720
Loss from continuing operations	$ (32,522)	$ (24,778)	$ (19,315)	$ (14,786)	$ (41,742)	$ (20,354)	$ (30,990)	$ (23,650)	(91,401)	(116,736)
Loss from discontinued operations	$ (55,245)	$ (14,100)	$ (8,462)	$ (12,690)	$ (4,935)	$ (6,981)	$ (9,064)	$ (6,881)	$ (90,497)	$ (27,861)
Loss per share of common stock:
Net loss from continuing operations per share, basic and diluted (in dollars per share)	$ (1.30)	$ (0.97)	$ (0.71)	$ (0.55)	$ (1.57)	$ (0.77)	$ (1.18)	$ (0.89)	$ (3.50)	$ (4.41)
Net loss from discontinued operations per share, basic and diluted (in dollars per share)	$ (2.22)	$ (0.55)	$ (0.31)	$ (0.47)	$ (0.19)	$ (0.26)	$ (0.34)	$ (0.26)	$ (3.46)	$ (1.05)
Weighted average common shares outstanding:
Basic (in shares)	24,924	25,606	27,204	26,850	26,570	26,510	26,444	26,336	26,141	26,467
Diluted (in shares)	24,924	25,606	27,204	26,850	26,570	26,510	26,444	26,336	26,141	26,467
Continuing operations
Effect of Fourth Quarter Events [Line Items]
Total revenues	$ 121,922	$ 144,163	$ 147,975	$ 153,190	$ 157,866	$ 171,144	$ 165,558	$ 158,997	$ 567,250	$ 653,565
Segment profits	$ 23,869	$ 35,584	$ 38,915	$ 42,067	$ 40,251	$ 44,716	$ 45,245	$ 42,948	140,435	173,160
Loss from continuing operations									$ (91,401)	$ (116,736)