Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs
Beginning balance	$ 18,656	$ 13,569	$ 16,033
Total realized/unrealized gains or losses - Included in earnings	0	0	904
Total realized/unrealized gains or losses - Included in other comprehensive income	1,721	7,781	3,155
Transfers	4,000	4,000
Purchases			(1,186)
Settlements	(1,618)	(2,591)	(5,337)
Ending balance	22,759	22,759	13,569
State and Municipal Obligations
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs
Beginning balance	4,035	4,525	9,911
Total realized/unrealized gains or losses - Included in earnings	0	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	0	0	0
Transfers	4,000	4,000
Purchases			(1,186)
Settlements	(1,350)	(1,840)	(4,200)
Ending balance	6,685	6,685	4,525
Collateralized Debt Obligations
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs
Beginning balance	14,621	9,044	6,122
Total realized/unrealized gains or losses - Included in earnings	0	0	904
Total realized/unrealized gains or losses - Included in other comprehensive income	1,721	7,781	3,155
Transfers	0	0
Purchases			0
Settlements	(268)	(751)	(1,137)
Ending balance	$ 16,074	$ 16,074	$ 9,044