Other Comprehensive Income (Loss) (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
Securities available-for-sale (Before tax) [Abstract]
Change in unrealized gain during period	$ (405)	$ (95)	$ 4,116	$ (10,203)
Reclassification adjustment for gains included in net income	0	(25)	(128)	(229)
Total other comprehensive income (loss), before tax	(405)	(120)	3,988	(10,432)
Securities available-for-sale: (Tax Effect) [Abstract]
Change in unrealized gain during period	142	33	(1,441)	3,571
Reclassification adjustment for gains included in net income	0	9	45	80
Total other comprehensive income (loss), tax effect	142	42	(1,396)	3,651
Securities available-for-sale (Net of Tax) [Abstract]
Change in unrealized gain during period	(263)	(62)	2,675	(6,632)
Reclassification adjustment for gains included in net income	0	(16)	(83)	(149)
Total other comprehensive income (loss), net of tax	(263)	(78)	2,592	(6,781)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Gain on securities, net	0	25	128	229
Tax expense	(142)	(42)	1,396	(3,651)
Net earnings	4,472	3,540	15,446	10,631
Unrealized Gains and Losses on Securities Available-for-Sale [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Securities available-for-sale: (Tax Effect) [Abstract]
Total other comprehensive income (loss), tax effect	0	(9)	(45)	(80)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Gain on securities, net	0	(25)	(128)	(229)
Tax expense	0	9	45	80
Net earnings	$ 0	$ (16)	$ (83)	$ (149)