Fair Value Measurements - Financial Assets and Liabilities, Recurring (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets
Deferred compensation plan	$ 18,537	$ 18,381
Derivative instruments	40,636	31
Liabilities
Deferred compensation plan	27,055	27,012
Derivative instruments	0	9
Recurring basis
Assets
Deferred compensation plan	18,537	18,381
Derivative instruments	40,636	47
Total assets	59,173	18,428
Liabilities
Deferred compensation plan	27,055	27,012
Derivative instruments	0	25
Total liabilities	27,055	27,037
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring basis
Assets
Deferred compensation plan	18,537	18,381
Derivative instruments	0	0
Total assets	18,537	18,381
Liabilities
Deferred compensation plan	27,055	27,012
Derivative instruments	0	0
Total liabilities	27,055	27,012
Significant Other Observable Inputs (Level 2) | Recurring basis
Assets
Deferred compensation plan	0	0
Derivative instruments	19,251	44
Total assets	19,251	44
Liabilities
Deferred compensation plan	0	0
Derivative instruments	0	0
Total liabilities	0	0
Significant Unobservable Inputs (Level 3) | Recurring basis
Assets
Deferred compensation plan	0	0
Derivative instruments	21,385	3
Total assets	21,385	3
Liabilities
Deferred compensation plan	0	0
Derivative instruments	0	25
Total liabilities	$ 0	$ 25