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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2016
Subsequent Events
Subsequent Events	(19) Subsequent Events On February 8, 2017, the Company declared a quarterly dividend of eighteen cents ($0.18) per share on each outstanding share of Class A common stock and Class B common stock payable on March 16, 2017 to stockholders of record on March 2, 2017.