Loans - Troubled Debt Restructurings (Details) (USD $)	9 Months Ended
	Sep. 30, 2014 contract	Sep. 30, 2013 contract
Financing Receivable, Modifications [Line Items]
Number of contracts	5	9
Pre-modification outstanding recorded investment	$ 700,000	$ 10,092,000
Recorded investment	152,000	8,760,000
Allowance for loan losses, troubled debt restructurings	46,000,000
Troubled debt restructuring	5,900,000
Troubled debt restructuring, charge-offs	545,000
Troubled debt restructuring, payments received		1,300,000
Commercial & Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	3	5
Pre-modification outstanding recorded investment	545,000	2,737,000
Recorded investment		2,781,000
Commerical real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts		1
Pre-modification outstanding recorded investment		2,562,000
Recorded investment		2,536,000
Construction, land & land development [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1	2
Pre-modification outstanding recorded investment	30,000	4,671,000
Recorded investment	29,000	3,321,000
Other consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1	1
Pre-modification outstanding recorded investment	125,000	122,000
Recorded investment	$ 123,000	$ 122,000