Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals)

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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 98 $ 121
Accumulated amortization of intangible assets $ 7,709 $ 7,701
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 20,325,991 20,325,991
Common stock, shares outstanding 18,969,396 18,969,396
Treasury stock, common shares 1,356,595 1,356,595