Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parenthetical)

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CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Income Statement [Abstract]        
Stock-based compensation expense included in selling, general, and administrative expense $ 10 $ 20 $ 84 $ 35