Condensed Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts on trade accounts receivable (in dollars)	$ 116	$ 183
Loan Payable net of debt discount (in dollars)	$ 312	$ 0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	5,148,568	5,148,568
Common stock, shares outstanding	5,123,568	5,123,568
Treasury stock, shares	25,000	25,000