Investments Investments (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]
Interest Income, Securities, Operating, Taxable	$ 7,850	$ 7,668	$ 6,028	$ 22,438	$ 16,979
Interest Income, Securities, Operating, Tax Exempt	3,343	3,333	3,302	10,004	8,443
Investment Income, Dividend	1,138	985	541	2,698	1,079
Investment Income, Interest and Dividend	$ 12,331	$ 11,986	$ 9,871	$ 35,140	$ 26,501