Loss Per Share - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator (both basic and diluted):
Loss from continuing operations	$ (39,725)	$ (19,315)	$ (176,154)	$ (34,102)
Loss from discontinued operations, net of tax	(4,873)	(8,462)	(13,325)	(21,151)
Net loss available to common stockholders, basic	(44,598)	(27,777)	(189,479)	(55,253)
Net loss available to common stockholders, diluted	$ (44,598)	$ (27,777)	$ (189,479)	$ (55,253)
Denominator:
Denominator for basic and diluted loss per share (in shares)	24,957,478	27,203,635	24,935,693	27,028,041
Basic and diluted loss per common share from continuing operations (in dollars per share)	$ (1.59)	$ (0.71)	$ (7.06)	$ (1.26)
Basic and diluted loss per common share from discontinued operations (in dollars per share)	(0.20)	(0.31)	(0.53)	(0.78)
Net loss per share of common stock, basic and diluted (in dollars per share)	$ (1.79)	$ (1.02)	$ (7.59)	$ (2.04)