Allowance for Loan Losses - Recorded Investment Segregated By Amounts Individually Or Collectively In Allowance For Loan Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	$ 979,308	$ 929,055
Balance, end of period: Individually evaluated for impairment	26,345	11,297
Balance, end of period: Collectively evaluated for impairment	952,963	917,758
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	334,181	306,543
Balance, end of period: Individually evaluated for impairment	14,699	3,976
Balance, end of period: Collectively evaluated for impairment	319,482	302,567
Real Estate Construction One-To- Four Family
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	38,233	34,842
Balance, end of period: Individually evaluated for impairment	0	191
Balance, end of period: Collectively evaluated for impairment	38,233	34,651
Real Estate Construction Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	101,683	91,195
Balance, end of period: Individually evaluated for impairment	731	772
Balance, end of period: Collectively evaluated for impairment	100,952	90,423
Real Estate Term Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	111,245	109,472
Balance, end of period: Individually evaluated for impairment	6,002	1,332
Balance, end of period: Collectively evaluated for impairment	105,243	108,140
Real Estate Term Non-Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	295,613	286,616
Balance, end of period: Individually evaluated for impairment	4,246	4,346
Balance, end of period: Collectively evaluated for impairment	291,367	282,270
Real Estate Term Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	38,511	36,894
Balance, end of period: Individually evaluated for impairment	149	150
Balance, end of period: Collectively evaluated for impairment	38,362	36,744
Consumer Secured By 1st Deed Of Trust
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	29,328	32,000
Balance, end of period: Individually evaluated for impairment	518	530
Balance, end of period: Collectively evaluated for impairment	28,810	31,470
Consumer Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	30,514	31,493
Balance, end of period: Individually evaluated for impairment	0	0
Balance, end of period: Collectively evaluated for impairment	$ 30,514	$ 31,493