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Consolidated Balance Sheets [Parenthetical] - $ / shares
Dec. 31, 2017
Dec. 31, 2016
Jul. 01, 2015
Statement of Financial Position [Abstract]      
Common stock, par value (in dollars per share) $ 0.01 $ 0.01  
Common stock, shares authorized (in shares) 100,000,000 100,000,000  
Common Stock, Shares, Issued 50,598,901 48,955,909 17,000,000
Common stock, shares outstanding (in shares) 50,598,901 48,955,909  
Preferred Stock, Par or Stated Value Per Share $ 0.01 $ 0.01  
Preferred Stock, Shares Authorized 5,000,000 50,000,000  
Preferred Stock, Shares Outstanding 0 0  
Preferred Stock, Shares Issued 0 0