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Stock-Based Compensation (Details 3) (USD $) | 12 Months Ended
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Dec. 31, 2014
Options Outstanding |
Number Of Options (in shares) | 1,008,781 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Weighted-Average Exercise Price (in dollars per share) | $ 13.87 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Weighted-Average Remaining Contractual Term | 4 years 2 months 12 days
Options Exercisable |
Number Of Options (in shares) | 879,024 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Weighted-Average Exercise Price (in dollars per share) | $ 12.72 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Range Of Exercise Prices From Dollars 3.65 To 9.00 |
Stock options outstanding |
Exercise price, low end of range (in dollars per share) | $ 3.65 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsThreePointSixFiveToNineMember
Exercise price, high end of range (in dollars per share) | $ 9.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsThreePointSixFiveToNineMember
Options Outstanding |
Number Of Options (in shares) | 248,861 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsThreePointSixFiveToNineMember
Weighted-Average Exercise Price (in dollars per share) | $ 3.73 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsThreePointSixFiveToNineMember
Weighted-Average Remaining Contractual Term | 1 year 6 months
Options Exercisable |
Number Of Options (in shares) | 248,861 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsThreePointSixFiveToNineMember
Weighted-Average Exercise Price (in dollars per share) | $ 3.73 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsThreePointSixFiveToNineMember
Range Of Exercise Prices From Dollars 9.01 To 18.00 |
Stock options outstanding |
Exercise price, low end of range (in dollars per share) | $ 9.01 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsNinePointZeroOneToEieghteenMember
Exercise price, high end of range (in dollars per share) | $ 18.00 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsNinePointZeroOneToEieghteenMember
Options Outstanding |
Number Of Options (in shares) | 551,740 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsNinePointZeroOneToEieghteenMember
Weighted-Average Exercise Price (in dollars per share) | $ 14.66 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsNinePointZeroOneToEieghteenMember
Weighted-Average Remaining Contractual Term | 4 years 2 months 12 days
Options Exercisable |
Number Of Options (in shares) | 505,564 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsNinePointZeroOneToEieghteenMember
Weighted-Average Exercise Price (in dollars per share) | $ 14.40 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsNinePointZeroOneToEieghteenMember
Range Of Exercise Prices From Dollars 18.01 To 24.68 |
Stock options outstanding |
Exercise price, low end of range (in dollars per share) | $ 18.01 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsEieghteenPointZeroOneToTwentyFourPointSixEieghtMember
Exercise price, high end of range (in dollars per share) | $ 24.68 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsEieghteenPointZeroOneToTwentyFourPointSixEieghtMember
Options Outstanding |
Number Of Options (in shares) | 208,180 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsEieghteenPointZeroOneToTwentyFourPointSixEieghtMember
Weighted-Average Exercise Price (in dollars per share) | $ 23.90 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsEieghteenPointZeroOneToTwentyFourPointSixEieghtMember
Weighted-Average Remaining Contractual Term | 7 years 3 months 18 days
Options Exercisable |
Number Of Options (in shares) | 124,599 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsEieghteenPointZeroOneToTwentyFourPointSixEieghtMember
Weighted-Average Exercise Price (in dollars per share) | $ 23.87 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = myrg_RangeOfExercisePricesFromDollarsEieghteenPointZeroOneToTwentyFourPointSixEieghtMember

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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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