CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Treasury Stock, Shares	343,055	238,055
Preferred Stock [Member]
Par value of shares (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	50,000,000	50,000,000
Number of preferred shares issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Class A [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	58,287,506	58,097,933
Common stock, shares outstanding (in shares)	57,882,048	57,797,475