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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 0 0 0
Preferred stock, shares outstanding (in shares) 0 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 500,000,000 500,000,000 500,000,000
Common stock, shares issued (in shares) 1,426,153 11,805 1,396,344
Common stock, shares outstanding (in shares) 1,425,862 11,750 1,360,239
Treasury stock, at cost (in share) 1 1 110
Scenario, Previously Reported [Member]      
Common stock, shares issued (in shares)   4,131,527  
Common stock, shares outstanding (in shares)   4,112,417  
Treasury stock, at cost (in share)   110