Fair Value Measurements - Financial Assets And (Liabilities) Measured At Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TOLI policies held by the Rabbi Trust	$ 0	$ 0	$ 0
Deferred Compensation Plan obligations	0	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TOLI policies held by the Rabbi Trust	6,378	6,543	6,092
Deferred Compensation Plan obligations	(12,129)	(10,839)	(9,860)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TOLI policies held by the Rabbi Trust	0	0	0
Deferred Compensation Plan obligations	0	0	0
Foreign currency contracts | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities)	0	0	0
Foreign currency contracts | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities)	18,796	(7,151)	8,599
Foreign currency contracts | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets (liabilities)	$ 0	$ 0	$ 0