Discontinued Operations (Schedule of Results of Discontinued Operations) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								7 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Aug. 16, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operations and Disposal Groups [Abstract]
Total Revenues									$ 219,002		$ 390,912	$ 402,856
Income from discontinued operations before income taxes									32,167		75,418	70,515
Gain on sale									120,321	120,321	0	0
Less: income tax expense									49,092		20,190	16,690
Income from discontinued operations, including gain on sale - net of tax	$ 1,580	$ 79,404	$ 8,145	$ 14,267	$ 11,610	$ 21,078	$ 7,032	$ 15,508	$ 103,396	$ 103,396	$ 55,228	$ 53,825
Basic earnings per common share from discontinued operations									$ 0.49		$ 0.26	$ 0.28
Diluted earnings per common share from discontinued operations									$ 0.49		$ 0.26	$ 0.28