Credit Risk (Tables)

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Schedule of Allowance for Doubtful Accounts

The following table summarizes the changes in the allowance for doubtful accounts during the nine months ended September 30, 2013(in thousands):

	Nine months ended
	September 30, 2013
Balance at beginning of period		$1,733
Charged to expense	323
Write-offs	(4		)
Foreign currency translation adjustment	20
Balance at end of period		$2,072