Accounts Receivable and Sales Concentrations (Tables)

12 Months Ended

Dec. 31, 2013

Receivables [Abstract]

Summary of Accounts Receivables

	December 31,
	2013		2012
Trade	$	59,374	$	51,939
Less - allowance for doubtful accounts		445		311
Accounts receivable, net	$	58,929	$	51,628

Summary of Activity in the Allowance for Doubtful Accounts

Activity in the allowance for doubtful accounts is as follows:

Description	Balance at Beginning of Year		Additions		Write- offs			Currency Impacts			Balance at End of Year
December 31, 2013
Allowance for doubtful accounts	$	311	$	177	$	(47	)	$	4		$	445
December 31, 2012
Allowance for doubtful accounts	$	438	$	98	$	(224	)	$	(1	)	$	311
December 31, 2011
Allowance for doubtful accounts	$	478	$	140	$	(178	)	$	(2	)	$	438