Allowance for Loan Losses - Allowance For Loan Losses (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
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$ 16,032	$ 16,528	$ 16,282	$ 16,408
Charge-Offs	(54)	(399)	(446)	(768)
Recoveries	265	1,184	1,543	1,523
Provision (benefit)	0	(785)	(1,136)	(635)
Balance, end of period	16,243	16,528	16,243	16,528
Balance, end of period: Individually evaluated for impairment	8	184	8	184
Balance, end of period: Collectively evaluated for impairment	16,235	16,344	16,235	16,344
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	5,134	6,380	5,779	6,308
Charge-Offs	0	(399)	(320)	(754)
Recoveries	259	675	889	894
Provision (benefit)	22	(359)	(933)	(151)
Balance, end of period	5,415	6,297	5,415	6,297
Balance, end of period: Individually evaluated for impairment	0	150	0	150
Balance, end of period: Collectively evaluated for impairment	5,415	6,147	5,415	6,147
Real Estate Construction One-To- Four Family
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	570	853	557	1,029
Charge-Offs	0	0	0	0
Recoveries	0	18	625	54
Provision (benefit)	64	(256)	(548)	(468)
Balance, end of period	634	615	634	615
Balance, end of period: Individually evaluated for impairment	0	15	0	15
Balance, end of period: Collectively evaluated for impairment	634	600	634	600
Real Estate Construction Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	830	307	539	326
Charge-Offs	0	0	0	0
Recoveries	0	0	0	78
Provision (benefit)	285	111	576	14
Balance, end of period	1,115	418	1,115	418
Balance, end of period: Individually evaluated for impairment	0	0	0	0
Balance, end of period: Collectively evaluated for impairment	1,115	418	1,115	418
Real Estate Term Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	1,384	1,330	1,583	1,441
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Provision (benefit)	177	36	(22)	(75)
Balance, end of period	1,561	1,366	1,561	1,366
Balance, end of period: Individually evaluated for impairment	0	0	0	0
Balance, end of period: Collectively evaluated for impairment	1,561	1,366	1,561	1,366
Real Estate Term Non-Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	4,124	3,827	4,297	4,065
Charge-Offs	0	0	0	0
Recoveries	0	489	0	489
Provision (benefit)	87	(242)	(86)	(480)
Balance, end of period	4,211	4,074	4,211	4,074
Balance, end of period: Individually evaluated for impairment	0	0	0	0
Balance, end of period: Collectively evaluated for impairment	4,211	4,074	4,211	4,074
Real Estate Term Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	642	597	537	539
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Provision (benefit)	254	(13)	359	45
Balance, end of period	896	584	896	584
Balance, end of period: Individually evaluated for impairment	0	0	0	0
Balance, end of period: Collectively evaluated for impairment	896	584	896	584
Consumer Secured By 1st Deed Of Trust
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	272	332	322	344
Charge-Offs	(13)	0	(52)	0
Recoveries	0	0	0	0
Provision (benefit)	7	13	(4)	1
Balance, end of period	266	345	266	345
Balance, end of period: Individually evaluated for impairment	8	0	8	0
Balance, end of period: Collectively evaluated for impairment	258	345	258	345
Consumer Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	370	385	390	388
Charge-Offs	(41)	0	(74)	(14)
Recoveries	6	2	29	8
Provision (benefit)	53	(14)	43	(9)
Balance, end of period	388	373	388	373
Balance, end of period: Individually evaluated for impairment	0	19	0	19
Balance, end of period: Collectively evaluated for impairment	388	354	388	354
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	2,706	2,517	2,278	1,968
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Provision (benefit)	(949)	(61)	(521)	488
Balance, end of period	1,757	2,456	1,757	2,456
Balance, end of period: Individually evaluated for impairment	0	0	0	0
Balance, end of period: Collectively evaluated for impairment	$ 1,757	$ 2,456	$ 1,757	$ 2,456