Supplemental Comprehensive Income Disclosures (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Supplemental Comprehensive Income Disclosures [Abstract]
Unrealized holding losses on securities arising during the period	$ (5,544)	$ (4,003)	$ 16,863	$ (31,644)
Reclassification adjustment for gains on securities included in net income	(48)	(229)	(50)	(237)
Total unrealized losses on securities	(5,592)	(4,232)	16,813	(31,881)
Unrealized Gain (Loss) on Derivatives, Pretax, Accumulated Other Comprehensive Income (Loss)	(27)	0	(27)	0
Reclassification adjustment for gains on derivatives included in net income, before Tax	1	0	1	0
Total unrealized gain on derivatives	(26)	0	(26)	0
Total other comprehensive (loss) income	(5,618)	(4,232)	16,787	(31,881)
Unrealized holding losses on securities arising during the period	1,938	1,405	(5,902)	11,070
Reclassification adjustment for gains on securities included in net income	17	80	18	83
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	1,955	1,485	(5,884)	11,153
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	9	0	9	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	0	0	0	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	9	0	9	0
Total other comprehensive (loss) income	1,964	1,485	(5,875)	11,153
Other comprehensive income (loss) before reclassification adjustment	(3,606)	(2,598)	10,961	(20,574)
Reclassification adjustment for gains on securities included in net income	(31)	(149)	(32)	(154)
Total unrealized (losses) gains on securities	(3,637)	(2,747)	10,929	(20,728)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(18)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	1	0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(17)	0	(17)	0
Total other comprehensive (loss) income	$ (3,654)	$ (2,747)	$ 10,912	$ (20,728)