XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.19.1

Revenue Recognition - Schedule of revenue by contract type (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Amount | $ 468,094 | $ 345,611
Sales Revenue, Net [Member] |  |
Amount | $ 468,094 | $ 345,611
Percent | 100.00% | 100.00%
Contract Type Fixed price [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 267,035 | $ 168,590
Percent | 57.00% | 48.80%
Contract Type Unit price [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 61,182 | $ 55,326
Percent | 13.10% | 16.00%
Contract Type T&E [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 88,839 | $ 89,802
Percent | 19.00% | 26.00%
Contract Type Other [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 51,038 | $ 31,893
Percent | 10.90% | 9.20%
T&D [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 272,548 | $ 216,386
Percent | 100.00% | 100.00%
T&D [Member] | Contract Type Fixed price [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 133,324 | $ 79,435
Percent | 48.90% | 36.70%
T&D [Member] | Contract Type Unit price [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 51,194 | $ 45,676
Percent | 18.80% | 21.10%
T&D [Member] | Contract Type T&E [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 76,308 | $ 80,345
Percent | 28.00% | 37.10%
T&D [Member] | Contract Type Other [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 11,722 | $ 10,930
Percent | 4.30% | 5.10%
C&I [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 195,546 | $ 129,225
Percent | 100.00% | 100.00%
C&I [Member] | Contract Type Fixed price [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 133,711 | $ 89,155
Percent | 68.40% | 69.00%
C&I [Member] | Contract Type Unit price [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 9,988 | $ 9,650
Percent | 5.10% | 7.50%
C&I [Member] | Contract Type T&E [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 12,531 | $ 9,457
Percent | 6.40% | 7.30%
C&I [Member] | Contract Type Other [Member] | Sales Revenue, Net [Member] |  |
Amount | $ 39,316 | $ 20,963
Percent | 20.10% | 16.20%

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=us-gaap_FixedPriceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=myrg_UnitPriceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=myrg_TeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=us-gaap_OtherContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=myrg_TransmissionAndDistributionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=myrg_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |