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Accrued Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Accrued Liabilities, Current [Abstract]    
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
technologylicensepurchaseobigationcurrent 1,500 1,750
Taxes payable 1,664 555
Other 1,588 1,397
Total $ 13,746 $ 11,988