Accumulated Other Comprehensive Income Details 1 (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Accumulated Other Comprehensive Income [Abstract]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 249		$ (62)
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	1,586		(433)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1,835		(495)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	187		(49)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	1,648		(446)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	4,493		3,889
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent	990		875
Income Tax Expense (Benefit)	20,384	$ 13,871
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	5,151		2,568
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	3,503		$ 3,014
Cross Currency Swap Revaluation Portion Recognized in Earnings	2,600
Cross Currency Swap interest portion recognized in income	$ 1,000