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Equity - Class of Stock Disclosures - Preferred Stock (Details) - Series C Preferred Stock - $ / shares
12 Months Ended
Jan. 01, 2015
Dec. 31, 2015
Dec. 31, 2014
Sep. 30, 2016
Equity        
Preferred shares outstanding     2,000,000 0
Dividend Rate (as a percent)     8.50%  
Number of shares of common stock to be issued upon conversion 2,000,000      
Conversion price per share $ 19.25      
Shares converted   2,000,000