Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited)

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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Receivables, allowance for doubtful accounts $ 81 $ 21
Property and equipment, accumulated depreciation and amortization $ 2,697 $ 4,678
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 29,750,000 29,750,000
Common stock, shares issued (in shares) 9,529,153 9,364,804
Common stock, shares outstanding (in shares) 9,529,153 9,364,804
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 250,000 250,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0