Fair Value Measurements - Fair Value of Assets and Liabilities Measured on Recurring Basis, Including Derivative Instruments (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||||||||||||||
Derivative instruments, assets | [1],[2] | $ 37,296 | $ 44,099 | ||||||||||||
Deferred compensation plan assets | [1],[3] | 9,141 | 1,613 | ||||||||||||
Total, assets | 46,437 | 45,712 | |||||||||||||
Earn-out consideration | [4],[5] | 3,463 | 17,073 | ||||||||||||
Derivative instruments, liabilities | [2],[4] | 21,927 | 35,245 | ||||||||||||
Deferred compensation plan liability | [4],[6] | 8,994 | 1,582 | ||||||||||||
Total, liabilities | 34,384 | 53,900 | |||||||||||||
Fair Value, Inputs, Level 2 | |||||||||||||||
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||||||||||||||
Derivative instruments, assets | [1],[2] | 37,296 | 44,099 | ||||||||||||
Total, assets | 37,296 | 44,099 | |||||||||||||
Derivative instruments, liabilities | [2],[4] | 21,927 | 35,245 | ||||||||||||
Total, liabilities | 21,927 | 35,245 | |||||||||||||
Fair Value, Inputs, Level 3 | |||||||||||||||
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||||||||||||||
Deferred compensation plan assets | [1],[3] | 9,141 | 1,613 | ||||||||||||
Total, assets | 9,141 | 1,613 | |||||||||||||
Earn-out consideration | [4],[5] | 3,463 | 17,073 | ||||||||||||
Deferred compensation plan liability | [4],[6] | 8,994 | 1,582 | ||||||||||||
Total, liabilities | $ 12,457 | $ 18,655 | |||||||||||||
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