Special Dividend (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended	0 Months Ended
	Jul. 09, 2013	Sep. 30, 2013	Jun. 12, 2013 Special Dividend	Jul. 02, 2013 Special Dividend
Special Dividend
Special cash dividend declared (in dollars per share)			$ 9.00
Common stock, shares outstanding				52,237,055
Dividends paid	$ 470,100	$ 470,133