Allowance for Loan Losses Schedule of Troubled Debt Restructuring Current Period (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	10	64	15
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 603	$ 5,640	$ 2,879
Commercial and Industrial
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	3	4	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	115	1,773	0
Commercial and Industrial | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	3	4	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	115	1,773	0
Commercial and Industrial | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0
Commercial Real Estate
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	1	7	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	328	3,101	920
Commercial Real Estate | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	1	6	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	328	3,101	920
Commercial Real Estate | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end		1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0
Commercial Real Estate Construction Financing Receivable
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	276	0
Commercial Real Estate Construction Financing Receivable | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	231	0
Commercial Real Estate Construction Financing Receivable | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end		1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		45
Total commercial
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	4	13	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	443	5,150	920
Total commercial | Originated Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	4	11	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	443	5,105	920
Total commercial | Covered Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end		2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		45
Consumer Installment
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	5	17	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	99	170	3
Consumer Installment | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	4	17	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	22	170	3
Consumer Installment | Covered TDR Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0
Consumer Installment | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	77	0
Home Equity Line of Credit
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	1	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	61	0	24
Home Equity Line of Credit | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0	24
Home Equity Line of Credit | Covered TDR Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0
Home Equity Line of Credit | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	61	0
Consumer Credit Card
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	33	9
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	245	74
Consumer Credit Card | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	33	9
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	245	74
Residential Mortgages
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	1	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	75	1,858
Residential Mortgages | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	1	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	75	1,858
Residential Mortgages | Covered TDR Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0
Residential Mortgages | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0	0
Total consumer
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	6	51	14
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	160	490	1,959
Total consumer | Originated Consumer Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	4	51	14
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	22	490	1,959
Total consumer | Covered TDR Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0
Total consumer | Acquired Loans
Troubled Debt Restructuring, Debtor, Current Period [Line Items]
financing receivable, modifications, subsequent default, number of contracts at period end	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 138	$ 0