Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2014

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued liabilities consist of the following (in thousands):

	March 31, 2014		December 31, 2013
Rebates and lease buyouts	$	2,036	$	1,699
Advance payments from customers	3,778		4,971
Accrued Group Purchasing Organization (GPO) fees	2,558		2,324
Technology license purchase obligation, current portion	1,000		1,500
Taxes payable	2,406		1,664
Other	1,716		1,588
Total	$	13,494	$	13,746