Loans and Allowance for Loan Losses - Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment, Total	$ 19,124		$ 21,511
Unpaid Principal Balance, Total	26,341		27,317
Related Allowance, Total	917		938
Average Recorded Balance, Total	20,318	24,579
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	12,512		15,530
Unpaid Principal Balance	16,899		20,438
Related Allowance	0		0
Average Recorded Balance	14,021	16,705
Recorded Investment	3,663		2,312
Unpaid Principal Balance	5,553		2,319
Related Allowance	838		865
Average Recorded Balance	2,988	4,374
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	202		214
Unpaid Principal Balance	255		267
Related Allowance	0		0
Average Recorded Balance	208	186
Recorded Investment	258		258
Unpaid Principal Balance	258		258
Related Allowance	73		73
Average Recorded Balance	258	346
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	1,233		1,731
Unpaid Principal Balance	1,371		1,940
Related Allowance	0		0
Average Recorded Balance	1,482	1,832
Recorded Investment	21		0
Unpaid Principal Balance	82		0
Related Allowance	6		0
Average Recorded Balance	11	0
Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	980		1,111
Unpaid Principal Balance	1,563		1,623
Related Allowance	0		0
Average Recorded Balance	1,045	847
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	190		195
Unpaid Principal Balance	263		268
Related Allowance	0		0
Average Recorded Balance	192	178
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Balance	0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	65		160
Unpaid Principal Balance	97		204
Related Allowance	0		0
Average Recorded Balance	113	111
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Balance	$ 0	$ 0