Fair Value (Details 1) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
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	$ 20,033	$ 21,203	$ 13,569
Total realized/unrealized gains or losses - Included in earnings	0	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	(350)	(185)	7,100
Transfers	0	0
Purchases			4,000
Settlements	(92)	(1,427)	(3,466)
Ending balance	19,591	19,591	21,203
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	4,725	5,900	4,525
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	0	0
Purchases			4,000
Settlements	0	(1,175)	(2,625)
Ending balance	4,725	4,725	5,900
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	15,308	15,303	9,044
Total realized/unrealized gains or losses - Included in earnings	0	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	(350)	(185)	7,100
Transfers	0	0
Purchases			0
Settlements	(92)	(252)	(841)
Ending balance	$ 14,866	$ 14,866	$ 15,303