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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Allowance for doubtful accounts $ 228 $ 318
Common stock, par value $ 0.0005 $ 0.0005
Common stock, shares authorized 200,000,000 200,000,000
Common stock, shares issued 46,979,395 15,709,786
Common stock, shares outstanding 46,924,183 15,709,786
Treasury stock, shares 55,212 0
Convertible Series A preferred stock [Member]    
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 4,871,802
Preferred stock, shares outstanding 0 4,871,802
Convertible Series B preferred stock [Member]    
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 450,962
Preferred stock, shares outstanding 0 450,962