Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Derivative Instruments, Gain (Loss) [Table Text Block]

Derivatives in subtopic 815-20 Cash Flow Hedging Relationship	Amount of Unrealized Gain or (Loss) Recognized in Accumulated other Comprehensive Income on Derivative				Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income(A)	Amount of Realized Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income
	2017		2016			2017		2016
Foreign exchange contracts	$	642,000	$	—	Cost of goods sold	$	18,000	$	—
					Sales, general and administrative expense	$	2,000	$	—

Fair Value, by Balance Sheet Grouping [Table Text Block]

	Fair Values of Derivatives Instruments
	March 31, 2017
	Asset Derivatives			Liability Derivatives
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Foreign exchange contracts	Prepaid expense other current assets	$	359,000	Accrued liabilities other	$	—
Notional contract values		$	6,181,000		$	—
	December 31, 2016
	Asset Derivatives			Liability Derivatives
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Foreign exchange contracts	Prepaid expense other current assets	$	—	Accrued liabilities other	$	303,000
Notional contract values		$	—		$	6,502,000