Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Total Parsons Equity	Noncontrolling Interest
Beginning balance at Dec. 31, 2021	$ 1,937,112	$ 146,277	$ (867,391)	$ 2,684,979	$ (53,529)	$ (9,568)	$ 1,900,768	$ 36,344
Comprehensive income
Net income	23,843				20,667		20,667	3,176
Foreign currency translation gain (loss), net	2,874					2,873	2,873	1
Pension adjustments, net	22					22	22
Contributions	1,226							1,226
Distributions	(8,309)							(8,309)
Issuance of equity securities, net of retirements	(4,493)	222		(4,719)	4		(4,493)
Repurchases of common stock	(5,548)	(151)		(5,397)			(5,548)
Stock-based compensation	3,898			3,898			3,898
Ending Balance at Mar. 31, 2022	1,950,625	146,348	(867,391)	2,678,761	(32,858)	(6,673)	1,918,187	32,438
Beginning balance at Dec. 31, 2022	2,095,935	146,132	(844,936)	2,717,134	43,089	(17,849)	2,043,570	52,365
Comprehensive income
Net income	35,276				25,553		25,553	9,723
Foreign currency translation gain (loss), net	(177)					(177)	(177)
Pension adjustments, net	1					1	1
Contributions	200							200
Distributions	(638)							(638)
Issuance of equity securities, net of retirements	(6,060)	251		(6,098)	(213)		(6,060)
Repurchases of common stock	(6,000)	(139)		(5,861)			(6,000)
Stock-based compensation	6,992			6,992			6,992
Ending Balance at Mar. 31, 2023	$ 2,125,530	$ 146,244	$ (844,936)	$ 2,712,167	$ 68,429	$ (18,025)	$ 2,063,879	$ 61,651