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Accrued Liabilities
 12 Months Ended
Dec. 31, 2013
Accrued Liabilities, Current [Abstract]  
Accrued Liabilities [Text Block]
Accrued Liabilities
Accrued liabilities consist of the following (in thousands):

December 31,
2013
 
December 31,
2012
Rebates and lease buyouts
$
1,699

 
$
3,179

Advance payments from customers
4,971

 
2,829

Accrued Group Purchasing Organization (GPO) fees
2,324

 
2,278

Technology license purchase obligation, current portion
1,500

 
1,750

Taxes payable
1,664

 
555

Other
1,588

 
1,397

Total
$
13,746

 
$
11,988