Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The dollar equivalent of the U.S. dollar forward contracts and related fair values as of December 31, 2016 and 2015 were as follows:

	December 31,
	2016		2015
Notional amount	$	3,827	$	5,423
Fair value of (liability) asset	$	312	$	(85	)