Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Minimum Lease Payments (Detail)

v2.4.1.9
Commitments and Contingencies - Minimum Lease Payments (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Remainder of 2015 $ 62,726us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear
2016 54,174us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2017 43,261us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2018 31,518us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2019 16,458us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
Thereafter 25,434pwr_OperatingLeasesFutureMinimumPaymentsDueAfterFourthYearThereafter
Total minimum lease payments $ 233,571us-gaap_OperatingLeasesFutureMinimumPaymentsDue