Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Nov. 30, 2019	Oct. 31, 2019	Sep. 30, 2019	Aug. 31, 2019	Jul. 31, 2019
Scenario, Forecast [Member] | Foreign Exchange Contract Used [Member]
Derivative [Line Items]
Derivative, Notional Amount				$ 7,948	$ 7,695	$ 8,595
Scenario, Forecast [Member] | Foreign Exchange Contract Entered [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 10,000	$ 2,042	$ 2,988		$ 1,251	$ 653
Subsequent Events [Member] | Foreign Exchange Contract Used [Member]
Derivative [Line Items]
Derivative, Notional Amount							$ 14,130
Subsequent Events [Member] | Foreign Exchange Contract Entered [Member]
Derivative [Line Items]
Derivative, Notional Amount							$ 3,234