Changes in Stockholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Common Stock [Member]	Dec. 31, 2013 Common Stock [Member]	Sep. 30, 2014 Additional Paid-In Capital [Member]	Sep. 30, 2014 Accumulated Other Comprehensive Income/(Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, December 31, 2013 (in shares)					0	0
Balance, December 31, 2013			$ 547,362		$ 0	$ 0	$ 686,577	$ (799)
Unrealized loss on available for sale securities, net of tax								(3)
Unrealized loss on cash flow hedges, net of tax								(3,395)
Less: reclassification adjustment for net losses included in net income, net of tax	(649)	0	(1,926)	0				1,926
Compensatory arrangements							6,558	0
Capital contribution from Holdings							112,756
Other							(566)	39
Balance, September 30, 2014 (in shares)					0	0
Balance, September 30, 2014	$ 560,753		$ 560,753		$ 0	$ 0	$ 805,325	$ (2,232)