CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenues		$ 120,071	$ 81,923	$ 228,156	$ 241,615
Cost of revenue (exclusive of depreciation of $2,595, $2,240, $5,126 and $4,071, respectively included below)		68,639	33,804	125,924	148,952
Marketing expense		1,396	765	2,627	8,064
Selling, general and administrative expenses		9,652	8,905	19,349	20,957
Depreciation expense		2,740	2,410	5,423	4,440
Restructuring and related charges			827		1,309
Operating income		37,644	35,212	74,833	57,893
Interest expense		9,400	11,253	20,156	22,523
Loss on extinguishment and modification of debt		19,027		19,027
Other expense (income), net		259		(872)
Total non-operating expense, net		28,686	11,253	38,311	22,523
Income before income taxes		8,958	23,959	36,522	35,370
Income tax expense		187	6,757	7,806	9,893
Income from continuing operations		8,771	17,202	28,716	25,477
Income (loss) from discontinued operations, net of income tax benefit of $142, $650, $419 and $18,931, respectively		(414)	11,309	(1,223)	(195,072)
Net income (loss)		$ 8,357	$ 28,511	$ 27,493	$ (169,595)
Earnings (loss) per share - basic:
Continuing operations		$ 0.18	$ 0.35	$ 0.58	$ 0.52
Discontinued operations		(0.01)	0.23	(0.02)	(4.01)
Net income (loss)	[1]	0.17	0.59	0.56	(3.49)
Earnings (loss) per share - diluted:
Continuing operations		0.17	0.35	0.57	0.52
Discontinued operations		(0.01)	0.23	(0.02)	(4.00)
Net income (loss)	[1]	$ 0.17	$ 0.58	$ 0.55	$ (3.47)
Comprehensive income (loss)		$ 9,782	$ 27,366	$ 31,720	$ (190,569)
Weighted average common shares and equivalents:
Basic		49,470	48,711	49,361	48,662
Diluted		50,457	48,794	50,413	48,825

[1] Figures may not add due to rounding.