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, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Effect of Fourth Quarter Events [Line Items]
Loss from continuing operations	$ (43,901)	$ (29,153)	$ (39,725)	$ (136,429)	$ (32,522)	$ (24,778)	$ (19,315)	$ (14,786)	$ (249,208)	$ (91,401)
Loss from discontinued operations	(2,716)	(2,926)	(4,873)	(8,452)	(55,245)	(14,100)	(8,462)	(12,690)	(18,967)	(90,497)
Net loss	$ (46,617)	$ (32,079)	$ (44,598)	$ (144,881)	$ (87,767)	$ (38,878)	$ (27,777)	$ (27,476)	$ (268,175)	$ (181,898)
Loss from continuing operations per share, basic and diluted (in dollars per share)	$ (1.76)	$ (1.17)	$ (1.59)	$ (5.48)	$ (1.30)	$ (0.97)	$ (0.71)	$ (0.55)	$ (10.00)	$ (3.50)
Loss from discounted operations per share, basic and diluted (in dollars per share)	(0.11)	(0.12)	(0.19)	(0.34)	(2.22)	(0.55)	(0.31)	(0.47)	(0.76)	(3.46)
Net loss per share, basic and diluted (in dollars per share)	$ (1.87)	$ (1.29)	$ (1.78)	$ (5.82)	$ (3.52)	$ (1.52)	$ (1.02)	$ (1.02)	$ (10.76)	$ (6.96)
Shares used in computing basic and diluted earning per share (in shares)	24,900	24,927	24,957	24,914	24,924	25,606	27,204	26,850	24,925	26,141
Continuing Operations
Effect of Fourth Quarter Events [Line Items]
Revenues	$ 97,935	$ 95,400	$ 89,637	$ 128,403	$ 121,922	$ 144,163	$ 147,975	$ 153,190	$ 411,375	$ 567,250
Segment profits	$ 16,581	$ 12,138	$ 18,361	$ 26,228	$ 25,271	$ 39,448	$ 38,915	$ 42,067	$ 73,308	$ 145,701