Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Jul. 24, 2020
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-08325
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3158643
Entity Address, Address Line One	1701 Golf Road
Entity Address, Address Line Two	Suite 3-1012
Entity Address, City or Town	Rolling Meadows
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60008
City Area Code	847
Local Phone Number	290-1891
Security Exchange Name	NASDAQ
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	MYR GROUP INC.
Entity Central Index Key	0000700923
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	MYRG
Title of 12(b) Security	Common Stock, $0.01 par value
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		16,708,925
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Shell Company	false