Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Allowance for Doubtful Accounts Activity [Table Text Block]

Activity within our accounts receivable allowance was as follows (in thousands):

	Year Ended December 31,
	2012			2011			2010
Balance, beginning of period	$	5,553		$	5,685		$	3,306
Expense	(154		)	(18		)	2,499
Write-offs	(2,732		)	(25		)	(63		)
Translation adjustments	51			(89		)	(57		)
Balance, end of period	$	2,718		$	5,553		$	5,685