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Description of the Company and Basis of Presentation - Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ (9,151)	$ 4
Changes in operating assets and liabilities:
Contract assets	2,346	(442)
Income taxes payable	(1,634)	(4,735)
Net cash provided by operating activities	$ 3,583	(2,352)
As Previously Reported
Cash flows from operating activities:
Net income		98
Changes in operating assets and liabilities:
Contract assets		(564)
Income taxes payable		(4,707)
Net cash provided by operating activities		(2,352)
Adjustment
Cash flows from operating activities:
Net income		(94)
Changes in operating assets and liabilities:
Contract assets		122
Income taxes payable		$ (28)

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