Derivative Instruments and Hedging Activities Open Foreign Currency Contracts (Details) - Cash Flow Hedging - Foreign Exchange Contract - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	$ 112,700	$ 134,400
Net Unrealized Gain (Loss)	(1,100)	(100)
Australian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	10,100	16,000
Net Unrealized Gain (Loss)	1,000	(100)
Canadian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	64,800	101,400
Net Unrealized Gain (Loss)	3,800	(1,100)
Mexican Peso
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	37,800	17,000
Net Unrealized Gain (Loss)	$ (5,900)	$ 1,100