Credit Risk (Tables)

3 Months Ended

Mar. 31, 2013

Receivables [Abstract]

Schedule of Allowance for Doubtful Accounts

The following table summarizes the changes in the allowance for doubtful accounts during the three months ended March 31, 2013(in thousands):

	Three months ended
	March 31, 2013
Balance at beginning of period		$1,733
Charged to expense	185
Write-offs	—
Foreign currency translation adjustment	(35		)
Balance at end of period		$1,883