Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities consist of the following (in thousands):

	June 30, 2013		December 31, 2012
Rebates and lease buyouts	$	3,657	$	3,179
Advance payments from customers	3,686		2,829
Accrued Group Purchasing Organization (GPO) fees	2,304		2,278
Technology license purchase obligation, current portion	1,500		1,750
Taxes payable	1,196		555
Other	1,710		1,397
Total	$	14,053	$	11,988