XML 48 R34.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Lease Obligations - Additional information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating And Finance Leases [Line Items]
Option to extend lease term (up to)	6 years
Option to terminate leases, period	1 year
Minimum lease payments required	$ 45,135
Subsidiaries | Employees
Operating And Finance Leases [Line Items]
Operating lease expense	600	$ 600
Minimum lease payments required	$ 12,100
Lease amortization period	5 years 4 months 24 days
Minimum
Operating And Finance Leases [Line Items]
Remaining lease term	1 year
Maximum
Operating And Finance Leases [Line Items]
Remaining lease term	10 years

X

- Definition

Lessee, operating and finance leases, option to extend, term.

+ References

No definition available.

+ Details

Name:	myrg_LesseeOperatingAndFinanceLeasesOptionToExtendTerm
Namespace Prefix:	myrg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, operating and finance leases, option to terminate, period.

+ References

No definition available.

+ Details

Name:	myrg_LesseeOperatingAndFinanceLeasesOptionToTerminatePeriod
Namespace Prefix:	myrg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee operating and finance leases remaining contract term.

+ References

No definition available.

+ Details

Name:	myrg_LesseeOperatingAndFinanceLeasesRemainingContractTerm
Namespace Prefix:	myrg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

It represents Lessee Operating Lease Amortization Period.

+ References

No definition available.

+ Details

Name:	myrg_LesseeOperatingLeaseAmortizationPeriod
Namespace Prefix:	myrg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

n/a

+ References

No definition available.

+ Details

Name:	myrg_OperatingAndFinanceLeasesLineItems
Namespace Prefix:	myrg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

+ Details

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-4

+ Details

Name:	us-gaap_OperatingLeaseExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=myrg_EmployeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: