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Subsequent Events - Revolver (Details) - Revolver - USD ($)
Jan. 26, 2017
Jan. 13, 2017
Feb. 01, 2017
Dec. 31, 2016
Debt Instrument [Line Items]        
Credit agreement, maximum capacity       $ 300,000,000
Subsequent Event        
Debt Instrument [Line Items]        
Proceeds from line of credit $ 25,000,000 $ 200,000,000    
Credit agreement, maximum capacity     $ 450,000,000