Accounts Receivable and Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2015

Valuation and Qualifying Accounts [Abstract]

Schedule of Allowance for Doubtful Accounts Receivable Roll Forward [Table Text Block]

The allowance for doubtful accounts consists of the following (in thousands):

	Balance at				Write-offs,
	Beginning of				Net of		Exchange		Balance at
	Year		Provision		Recoveries		Rate Effect		End of Period
2015	$	302	$	711	$	(19)	$	(4)	$	990
2014	$	114	$	193	$	(5)	$	-	$	302