CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenues		$ 862,615	$ 840,208
Operating expenses		651,461	638,597
Gross margin		211,154	201,611
Selling, general and administrative expenses		224,430	241,397
Restructuring and other related charges, net		0	16
Operating loss		(13,276)	(39,802)
Interest expense, net		(55,181)	(85,052)
Loss on debt extinguishment		(1,585)	(30,083)
Other income (expense), net		(1,102)	8,156
Loss before income taxes		(71,144)	(146,781)
Provision for income taxes (see Note 10)		(4,578)	(3,306)
Net loss from continuing operations		(75,722)	(150,087)
Discontinued operations:
Net income from discontinued operations, net of income tax		0	220,166
Net income (loss)	[1]	$ (75,722)	$ 70,079
Basic net income (loss) per common share:
Loss from continuing operations, basic (in USD per share)		$ (17.32)	$ (35.85)
Income (loss) from discontinued operations, basic (in USD per share)		0	52.58
Basic (in USD per share)		$ (17.32)	$ 16.73
Weighted-average number of shares outstanding:
Weighted-average number of basic shares outstanding (in shares)		4,371	4,187

[1] Consolidated statement of cash flows for the year ended December 31, 2022 includes cash flows from discontinued operations. See Note 2.