Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Instruments and Hedging Activities Disclosures [Line Items]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs we utilized to determine such fair value as of March 31, 2020 and December 31, 2019 (in thousands):

	Balance as of March 31, 2020		Fair Value Measurements as of March 31, 2020
			Level 1		Level 2		Level 3
Assets:
Cash surrender value of life insurance	$	50,724	$	—	$	50,724	$	—
Cross currency swap agreements	4,789		—		4,789		—
Total Assets	$	55,513	$	—	$	55,513	$	—
Liabilities:
Contingent consideration liabilities	$	12,069	$	—	$	—	$	12,069
Interest rate swaps	3,241		—		3,241		—
Deferred compensation liabilities	56,395		—		56,395		—
Cross currency swap agreements	18,292		—		18,292		—
Total Liabilities	$	89,997	$	—	$	77,928	$	12,069

	Balance as of December 31, 2019		Fair Value Measurements as of December 31, 2019
			Level 1		Level 2		Level 3
Assets:
Cash surrender value of life insurance	$	60,637	$	—	$	60,637	$	—
Interest rate swaps	3,262		—		3,262		—
Cross currency swap agreements	3,156		—		3,156		—
Total Assets	$	67,055	$	—	$	67,055	$	—
Liabilities:
Contingent consideration liabilities	$	11,539	$	—	$	—	$	11,539
Deferred compensation liabilities	63,981		—		63,981		—
Cross currency swap agreements	24,319		—		24,319		—
Total Liabilities	$	99,839	$	—	$	88,300	$	11,539

Schedule of Derivative Instruments [Table Text Block]

The following tables summarize the notional amounts and fair values of our designated cash flow hedges as of March 31, 2020 and December 31, 2019 (in thousands):

	Notional Amount		Fair Value at March 31, 2020 (USD)
	March 31, 2020		Other Current Assets		Other Noncurrent Assets		Other Accrued Expenses		Other Noncurrent Liabilities
Interest rate swap agreements
USD denominated	$	480,000	$	—	$	—	$	1,925	$	1,316
Cross currency swap agreements
USD/euro	$	462,655	4,789		—		18,292		—
Total cash flow hedges			$	4,789	$	—	$	20,217	$	1,316

	Notional Amount		Fair Value at December 31, 2019 (USD)
	December 31, 2019		Other Current Assets		Other Noncurrent Assets		Other Accrued Expenses		Other Noncurrent Liabilities
Interest rate swap agreements
USD denominated	$	480,000	$	—	$	3,262	$	—	$	—
Cross currency swap agreements
USD/euro	$	466,621	2,975		181		970		23,349
Total cash flow hedges			$	2,975	$	3,443	$	970	$	23,349