Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 2,406	$ 1,912
Accounts receivable, net of allowance of $33,030 and $26,828	296,570	369,690
Contract assets, net of allowance of $338 and $0	10,975	11,682
Taxes receivable	9,229	37,460
Prepaid expenses and other current assets	26,172	28,036
Indemnification asset	24,346	29,789
Total current assets	369,698	478,569
Fixed assets and capitalized software, net	89,044	101,512
Goodwill	609,457	609,457
Intangible assets, net	31,777	147,480
Deferred tax assets	93,099	0
Other assets	21,902	51,274
Total assets	1,214,977	1,388,292
Current liabilities
Accounts payable	8,927	16,067
Accrued liabilities	139,613	140,261
Current portion of unrecognized tax benefits	30,022	53,111
Contract liabilities	18,942	24,679
Other current liabilities	9,896	23,323
Total current liabilities	207,400	257,441
Senior Term Loan, net of debt issuance costs of $445 and $593	335,683	420,036
Senior Term Loan, related party	113,482	189,371
ABL Facility	79,238	104,985
Leaseback obligations	54,798	55,537
Pension obligations, net	190,827	193,533
Deferred tax liabilities	508	54,738
Other liabilities	36,266	85,391
Total long-term liabilities	810,802	1,103,591
Commitments and contingencies (see Note 16)
Stockholders' equity
Common stock - $0.01 par value, 250,000,000 shares authorized; 59,590,422, shares issued and 32,912,012 shares outstanding as of December 31, 2020; and 57,443,282 shares issued and 33,490,526 shares outstanding as of December 31, 2019	596	574
Additional paid-in capital	1,059,624	1,008,701
Treasury stock - 26,678,410 shares as of December 31, 2020 and 23,952,756 shares as of December 31, 2019	(468,613)	(437,962)
Accumulated deficit	(394,832)	(544,053)
Total stockholders' equity	196,775	27,260
Total liabilities and stockholders' equity	$ 1,214,977	$ 1,388,292