Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Accrued Liabilities [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	2013		2012
Salaries and benefits	$	7,527	$	8,444
Incentive compensation	3,497		4,210
Value Added Tax accrual	960		1,064
Other	3,567		4,092
	$	15,551	$	17,810