Allowance for Loan Losses - Recorded Investment Segregated By Amounts Individually Or Collectively In Allowance For Loan Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	$ 978,028	$ 929,055
Balance, end of period: Individually evaluated for impairment	34,986	11,297
Balance, end of period: Collectively evaluated for impairment	943,042	917,758
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	325,092	306,543
Balance, end of period: Individually evaluated for impairment	15,340	3,976
Balance, end of period: Collectively evaluated for impairment	309,752	302,567
Real Estate Construction One-To- Four Family
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	48,527	34,842
Balance, end of period: Individually evaluated for impairment	0	191
Balance, end of period: Collectively evaluated for impairment	48,527	34,651
Real Estate Construction Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	107,393	91,195
Balance, end of period: Individually evaluated for impairment	12,077	772
Balance, end of period: Collectively evaluated for impairment	95,316	90,423
Real Estate Term Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	112,527	109,472
Balance, end of period: Individually evaluated for impairment	5,925	1,332
Balance, end of period: Collectively evaluated for impairment	106,602	108,140
Real Estate Term Non-Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	291,113	286,616
Balance, end of period: Individually evaluated for impairment	856	4,346
Balance, end of period: Collectively evaluated for impairment	290,257	282,270
Real Estate Term Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	36,443	36,894
Balance, end of period: Individually evaluated for impairment	148	150
Balance, end of period: Collectively evaluated for impairment	36,295	36,744
Consumer Secured By 1st Deed Of Trust
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	27,664	32,000
Balance, end of period: Individually evaluated for impairment	560	530
Balance, end of period: Collectively evaluated for impairment	27,104	31,470
Consumer Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Financing Receivables	29,269	31,493
Balance, end of period: Individually evaluated for impairment	80	0
Balance, end of period: Collectively evaluated for impairment	$ 29,189	$ 31,493