Fair Value Measurements (Reconciliation of Changes in Financial Liabilities Fair Value Using Level 3 Inputs) (Details 2) - Level 3 $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Contingent consideration liabilities [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	$ 37,174
Changes in fair value	0
Accretion of value included in net income	606
Settlements or distributions	(1,849)
Foreign currency exchange rate changes	(109)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	35,822
Mandatorily redeemable noncontrolling interest [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	9,240
Changes in fair value	1,051
Accretion of value included in net income	0
Settlements or distributions	(19)
Foreign currency exchange rate changes	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	$ 10,272