CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenues		$ 437,714	$ 633,066	$ 606,299
Cost of revenue (exclusive of depreciation of $9,209, $5,920, and $4,109, respectively, included below)		250,362	445,817	418,333
Marketing expense		12,197	17,720	14,417
Selling, general and administrative expenses		42,991	53,198	35,077
Depreciation expense		9,930	7,137	4,667
Restructuring and related charges		4,358	1,881	124
Operating income		117,876	107,313	133,681
Interest expense		43,477	41,803	8,733
Income before income taxes		74,399	65,510	124,948
Income tax expense		17,530	20,293	27,046
Income from continuing operations		56,869	45,217	97,902
Income (loss) from discontinued operations, net of income tax (benefit) of ($46,851), ($59,881) and $325, respectively		(280,500)	(332,038)	901
Net income (loss)		$ (223,631)	$ (286,821)	$ 98,803
Earnings (loss) per share - basic:
Continuing operations		$ 1.17	$ 0.97	$ 2.44
Discontinued operations		(5.75)	(7.14)	0.02
Net income (loss)	[1]	(4.59)	(6.17)	2.47
Earnings (loss) per share – diluted:
Continuing operations		1.16	0.96	2.27
Discontinued operations		(5.70)	(7.05)	0.02
Net income (loss)		$ (4.54)	$ (6.09)	$ 2.29
Comprehensive income (loss)		$ (228,929)	$ (298,912)	$ 98,803
Weighted average common shares and equivalents:
Basic		48,746	46,509	40,078
Diluted		49,217	47,103	43,073

[1] Figures may not add due to rounding.