CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	MYR Group Inc. Shareholders’ Equity	MYR Group Inc. Shareholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to adopt ASC	$ 324,464		$ 0	$ 165	$ 148,276	$ (193)	$ 174,736		$ 322,984		$ 1,480
Balance, beginning of period at Dec. 31, 2018	324,464		0	$ 165	148,276	(193)	174,736		322,984		1,480
Balance, beginning of period (in shares) at Dec. 31, 2018				16,565,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	36,214						37,690		37,690		(1,476)
Stock issued under compensation plans, net (in shares)				105,000
Stock issued under compensation plans, net	341			$ 1	340				341
Stock-based compensation expense	4,403				4,403				4,403
Shares repurchased (in shares)				(23,000)
Shares repurchased	(778)				(571)		(207)		(778)
Other comprehensive income (loss)	(253)					(253)			(253)
Stock issued - other (in shares)				2,000
Stock issued – other	84				84				84
Balance, end of period at Dec. 31, 2019	364,475	$ (268)	0	$ 166	152,532	(446)	212,219	$ (268)	364,471	$ (268)	4
Balance, end of period (in shares) at Dec. 31, 2019				16,649,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to adopt ASC	364,475	$ (268)	0	$ 166	152,532	(446)	212,219	$ (268)	364,471	$ (268)	4
Net income	$ 58,759						58,759		58,759		0
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Stock issued under compensation plans, net (in shares)				108,000
Stock issued under compensation plans, net	$ 749			$ 1	748				749
Stock-based compensation expense	$ 5,688				5,688				5,688
Shares repurchased (in shares)	(24,910)			(25,000)
Shares repurchased	$ (652)				(422)		(230)		(652)
Other comprehensive income (loss)	469					469			469
Stock issued - other (in shares)				2,000
Stock issued – other	72				72				72
Balance, end of period at Dec. 31, 2020	429,292		0	$ 167	158,618	23	270,480		429,288		4
Balance, end of period (in shares) at Dec. 31, 2020				16,734,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to adopt ASC	429,292		0	$ 167	158,618	23	270,480		429,288		4
Net income	85,006						85,010		85,010		(4)
Stock issued under compensation plans, net (in shares)				187,000
Stock issued under compensation plans, net	498			$ 2	496				498
Stock-based compensation expense	$ 7,496				7,496				7,496
Shares repurchased (in shares)	(51,113)			(51,000)
Shares repurchased	$ (3,352)			$ (1)	(2,868)		(483)		(3,352)
Other comprehensive income (loss)	150					150			150
Stock issued - other (in shares)				1,000
Stock issued – other	12				12				12
Balance, end of period at Dec. 31, 2021	519,102		0	$ 168	163,754	173	355,007		519,102		0
Balance, end of period (in shares) at Dec. 31, 2021				16,871,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to adopt ASC	$ 519,102		$ 0	$ 168	$ 163,754	$ 173	$ 355,007		$ 519,102		$ 0