Contract Receivables, Net - Summary of Contract Receivables, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Billed and billable	$ 242,808	$ 264,682
Allowance for doubtful accounts	(4,334)	(3,506)
Contract receivables, net	$ 238,474	$ 261,176

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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