Income Taxes Income Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 39,395	$ 33,451	$ 37,565
Income Tax Reconciliation, State and Local Income Taxes	3,242	1,554	981
Income Tax Reconciliation, Tax Exempt Income	(20)	(48)	104
Income Tax Reconciliation, Tax Contingencies	(766)	(616)	(1,159)
Income Tax Reconciliation, Other Adjustments	123	(307)	115
Income Tax Expense (Benefit)	$ 41,974	$ 34,034	$ 37,398