Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities consist of the following (in thousands):

	March 31, 2013		December 31, 2012
Rebates and lease buyouts	$	4,097	$	3,179
Advance payments from customers	2,555		2,829
Accrued Group Purchasing Organization (GPO) fees	2,431		2,278
Technology license purchase obligation, current portion	1,250		1,750
Taxes payable	972		555
Other	1,220		1,397
Total	$	12,525	$	11,988