Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Derivatives designated as hedging instruments:
Derivative contracts
Assets			$ 26	$ 363	$ 673
Liabilities			(1,100)	(252)	(718)
Derivatives designated as hedging instruments: | Foreign currency forward contracts
Derivative contracts
Notional Amounts			368	919	1,768
Assets			21	79
Liabilities					(71)
Derivatives designated as hedging instruments: | Commodity futures contracts
Derivative contracts
Notional Amounts			11,537	13,840	9,880
Assets			5	284	673
Liabilities			$ (1,100)	$ (252)	$ (647)
Forecast
Derivative contracts
Gain (loss) to be reclassified	$ (259)	$ (836)