Allowance for Loan Losses - Recorded Investment Segregated By Amounts Individually Or Collectively In Allowance For Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	$ 965,026us-gaap_NotesReceivableNet	$ 929,055us-gaap_NotesReceivableNet
Balance, end of period: Individually evaluated for impairment	12,827	11,297
Balance, end of period: Collectively evaluated for impairment	952,199	917,758
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	324,433	306,543
Balance, end of period: Individually evaluated for impairment	5,337	3,976
Balance, end of period: Collectively evaluated for impairment	319,096	302,567
Real Estate Construction One-To- Four Family
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	41,272	34,842
Balance, end of period: Individually evaluated for impairment	0	191
Balance, end of period: Collectively evaluated for impairment	41,272	34,651
Real Estate Construction Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	92,382	91,195
Balance, end of period: Individually evaluated for impairment	755	772
Balance, end of period: Collectively evaluated for impairment	91,627	90,423
Real Estate Term Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	109,967	109,472
Balance, end of period: Individually evaluated for impairment	1,318	1,332
Balance, end of period: Collectively evaluated for impairment	108,649	108,140
Real Estate Term Non-Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	295,583	286,616
Balance, end of period: Individually evaluated for impairment	4,298	4,346
Balance, end of period: Collectively evaluated for impairment	291,285	282,270
Real Estate Term Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	40,149	36,894
Balance, end of period: Individually evaluated for impairment	433	150
Balance, end of period: Collectively evaluated for impairment	39,716	36,744
Consumer Secured By 1st Deed Of Trust
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	30,874	32,000
Balance, end of period: Individually evaluated for impairment	686	530
Balance, end of period: Collectively evaluated for impairment	30,188	31,470
Consumer Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	30,366	31,493
Balance, end of period: Individually evaluated for impairment	0	0
Balance, end of period: Collectively evaluated for impairment	$ 30,366	$ 31,493

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The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

+ Details

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- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

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