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Subsequent Events (Details) - $ / shares
3 Months Ended
Oct. 07, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Sep. 27, 2012
Subsequent Events                
Cash dividend declared per share (in dollars per share)   $ 0.19 $ 0.19 $ 0.19 $ 0.19 $ 0.19 $ 0.19  
BAML Term Loan | LIBOR                
Subsequent Events                
Fixed rate (as a percent)               0.75%
Cash distribution declared | Subsequent Events                
Subsequent Events                
Cash dividend declared per share (in dollars per share) $ 0.19