General form of registration statement for all companies including face-amount certificate companies

Condensed Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement of Financial Position [Abstract]      
Allowance of trade accounts receivable $ 22 $ 22 $ 49
Convertible preferred stock, par value $ 0.01 $ 0.01 $ 0.01
Convertible preferred stock, shares authorized 130,000,000 130,000,000 130,000,000
Convertible preferred stock, shares issued
Convertible preferred stock, shares outstanding
Common stock, par value $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized 250,000,000 250,000,000 250,000,000
Common stock, shares issued 3,022,073 2,280,407 907,187
Common stock, shares outstanding 3,022,073 2,280,407 907,187