Fair Value Measurements Market Risks and Derivative Hedge Contracts (Tables)

3 Months Ended

Mar. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions Table

Derivative Contracts	US Dollar Notional Amount		Traded Exchange Rate	Settlement Date
	(In Thousands)
Forward purchase Euro	$	7,245	1.14	6/19/2019
Forward sale Euro	1,139		1.14	4/17/2019
Forward sale pounds sterling	1,329		1.33	4/17/2019
Forward purchase Mexican peso	820		19.52	4/17/2019
Forward sale Norwegian krone	527		8.53	4/17/2019
Forward sale Mexican peso	6,301		19.52	4/17/2019

Derivatives Designated as Hedging Instruments Table

Foreign currency derivative instruments	Balance Sheet Location	Fair Value at March 31, 2019			Fair Value at December 31, 2018
		(In Thousands)
Forward purchase contracts	Current assets	$	27		$	41
Forward sale contracts	Current assets	49			76
Forward sale contracts	Current liabilities	(22		)	(126		)
Forward purchase contracts	Current liabilities	(100		)	(168		)
Net asset (liability)		$	(46	)	$	(177	)