Loans and Allowance for Loan Losses - Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment, Total	$ 20,258	$ 25,862	$ 20,258	$ 25,862	$ 21,511
Unpaid Principal Balance, Total	27,797	33,720	27,797	33,720	27,317
Related Allowance, Total	857	1,669	857	1,669	938
Average Recorded Balance, Total	19,693	26,500	20,298	26,388	24,579
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	13,276	17,629	13,276	17,629	15,530
Unpaid Principal Balance	18,712	24,502	18,712	24,502	20,438
Related Allowance	0	0	0	0	0
Average Recorded Balance	12,894	18,332	13,772	17,347	16,705
Recorded Investment	2,917	4,754	2,917	4,754	2,312
Unpaid Principal Balance	3,907	5,173	3,907	5,173	2,319
Related Allowance	772	1,566	772	1,566	865
Average Recorded Balance	3,290	4,830	2,964	5,867	4,374
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,353	161	1,353	161	214
Unpaid Principal Balance	1,577	213	1,577	213	267
Related Allowance	0	0	0	0	0
Average Recorded Balance	778	142	590	141	186
Recorded Investment	293	342	293	342	258
Unpaid Principal Balance	293	342	293	342	258
Related Allowance	85	103	85	103	73
Average Recorded Balance	275	392	269	414	346
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,237	1,991	1,237	1,991	1,731
Unpaid Principal Balance	1,439	2,298	1,439	2,298	1,940
Related Allowance	0	0	0	0	0
Average Recorded Balance	1,235	1,991	1,401	1,864	1,832
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Balance	11		7	60	0
Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	953	686	953	686	1,111
Unpaid Principal Balance	1,535	870	1,535	870	1,623
Related Allowance	0	0	0	0	0
Average Recorded Balance	967	584	1,015	522	847
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Balance			0	0	0
Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	165	225	165	225	195
Unpaid Principal Balance	231	248	231	248	268
Related Allowance	0	0	0	0	0
Average Recorded Balance	178	162	183	108	178
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Balance			0	0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	64	74	64	74	160
Unpaid Principal Balance	103	74	103	74	204
Related Allowance	0	0	0	0	0
Average Recorded Balance	65	67	97	65	111
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Balance			$ 0	$ 0	$ 0