Fair Value Measurement (Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	$ 256,983	$ 191,214
Marketable securities	3,273	4,448
Derivatives	3,366	1,884
Interest Rate Swap
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	3,963	1,966
Foreign Exchange Forward
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	3,018	1,888
Level I
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	256,983	191,214
Marketable securities	3,273	4,448
Derivatives	0	0
Level I | Interest Rate Swap
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	0	0
Level I | Foreign Exchange Forward
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	0	0
Level II
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0	0
Marketable securities	0	0
Derivatives	3,366	1,884
Level II | Interest Rate Swap
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	3,963	1,966
Level II | Foreign Exchange Forward
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	3,018	1,888
Level III
Assets, Fair Value Disclosure [Abstract]
Cash equivalents	0	0
Marketable securities	0	0
Derivatives	0	0
Level III | Interest Rate Swap
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	0	0
Level III | Foreign Exchange Forward
Liabilities, Fair Value Disclosure [Abstract]
Derivatives	$ 0	$ 0