Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

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,
	2011			2010			2009
Balance, beginning of period	$	5,685		$	3,306		$	3,139
Expense	(18		)	2,499			628
Write-offs	(25		)	(63		)	(525		)
Translation adjustments	(89		)	(57		)	64
Balance, end of period	$	5,553		$	5,685		$	3,306