Investment Securities Summary of Gains and Losses from Equity and Debt Securities, and Losses from Other-than-Temporary Impairment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Gain (Loss) on Investments [Line Items]
Gross Realized Gains	$ 1,124	$ 2,920	$ 1,447	$ 5,393
Available-for-sale Securities, Gross Realized Losses	0	(28)	(323)	(28)
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	12	27	12	27
Available-for-sale Securities, Gross Realized Gain (Loss)	1,112	2,865	1,112	5,338
Equity Securities [Member]
Gain (Loss) on Investments [Line Items]
Gross Realized Gains	0	1,083	1	2,222
Available-for-sale Securities, Gross Realized Losses	0	(28)	0	(28)
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	12	27	12	27
Available-for-sale Securities, Gross Realized Gain (Loss)	(12)	1,028	(11)	2,167
Debt Securities [Member]
Gain (Loss) on Investments [Line Items]
Gross Realized Gains	1,124	1,837	1,446	3,171
Available-for-sale Securities, Gross Realized Losses	0	0	(323)	0
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	0	0	0
Available-for-sale Securities, Gross Realized Gain (Loss)	1,124	1,837	1,123	3,171
Pooled Trust Preferred Securities [Member]
Gain (Loss) on Investments [Line Items]
Reductions for securities sold during the period	$ 2,746	$ 2,468	$ 3,472	$ 2,468