Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 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	$ 13,569	$ 16,033	$ 13,569
Total realized/unrealized gains or losses - Included in earnings	0	904
Total realized/unrealized gains or losses - Included in other comprehensive income	3,857	3,155
Transfers	0
Purchases		(1,186)
Settlements	(883)	(5,337)
Ending balance	16,543	13,569	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	4,525	9,911	4,525
Total realized/unrealized gains or losses - Included in earnings	0	0
Total realized/unrealized gains or losses - Included in other comprehensive income	0	0
Transfers	0
Purchases		(1,186)
Settlements	(490)	(4,200)
Ending balance	4,035	4,525	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	9,044	6,122	9,044
Total realized/unrealized gains or losses - Included in earnings	0	904
Total realized/unrealized gains or losses - Included in other comprehensive income	3,857	3,155
Transfers	0
Purchases		0
Settlements	(393)	(1,137)
Ending balance	$ 12,508	$ 9,044	$ 9,044