Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Payables And Accruals [Abstract]
Deposits	$ 26,754	$ 21,088
Restricted contract funds	1,982	12,165
IT and software licensing costs	1,402	1,702
Taxes and insurance premiums	7,473	5,267
Facilities rental and lease exit costs	966	1,291
Interest	484	212
Professional services	2,842	3,068
Dividends	2,627	2,643
Contingent and contractual liabilities from acquisitions		1,245
Interest rate swap liability - current		3,026
Other accrued expenses and current liabilities	7,719	9,789
Total accrued expenses and other current liabilities	$ 52,249	$ 61,496