CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Contract revenues	$ 2,498,289	$ 2,247,392	$ 2,071,159
Contract costs	2,173,308	1,971,539	1,857,001
Gross profit	324,981	275,853	214,158
Selling, general and administrative expenses	207,208	188,535	156,674
Amortization of intangible assets	2,311	3,586	3,849
Gain on sale of property and equipment	(3,098)	(2,813)	(3,543)
Income from operations	118,560	86,545	57,178
Other income (expense):
Interest income	70	9	4
Interest expense	(1,799)	(4,563)	(6,225)
Other expense, net	(525)	(606)	(515)
Income before provision for income taxes	116,306	81,385	50,442
Income tax expense	31,300	22,626	14,228
Net income	85,006	58,759	36,214
Less: net loss attributable to noncontrolling interest	(4)	0	(1,476)
Net income attributable to MYR Group Inc.	$ 85,010	$ 58,759	$ 37,690
Income per common share attributable to MYR Group Inc.:
Basic (in dollars per share)	$ 5.05	$ 3.52	$ 2.27
Diluted (in dollars per share)	$ 4.95	$ 3.48	$ 2.26
Weighted average number of common shares and potential common shares outstanding:
Basic (in shares)	16,838	16,684	16,587
Diluted (in shares)	17,161	16,890	16,699
Net income	$ 85,006	$ 58,759	$ 36,214
Other comprehensive income (loss):
Foreign currency translation adjustment	150	469	(253)
Other comprehensive income (loss)	150	469	(253)
Total comprehensive income	85,156	59,228	35,961
Less: net loss attributable to noncontrolling interest	(4)	0	(1,476)
Total comprehensive income attributable to MYR Group Inc.	$ 85,160	$ 59,228	$ 37,437