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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
CONSOLIDATED BALANCE SHEETS    
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized 11,242,172 11,242,172
Preferred stock, shares issued 9,358,560 4,948,369
Preferred stock, shares outstanding 9,358,560 4,948,369
Aggregate liquidation preference $ 86,951 $ 45,976
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized 38,000,000 38,000,000
Common stock, shares issued 13,121,000 13,088,500
Common stock, shares outstanding 13,121,000 13,088,500