Loans and Allowances for Credit Losses, Troubled Debt Restructurings, Modifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	$ 11,718	$ 18,032	$ 41,073	$ 40,478
Troubled Debt Restructurings, Recorded Balance With Payment Default	33,850	31,453	35,937	32,720
Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	9,655	16,065	26,255	27,510
Troubled Debt Restructurings, Recorded Balance With Payment Default	29,942	23,376	31,673	24,126
Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	5,809	3,439	15,858	8,288
Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	3,846	12,626	10,397	19,222
Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	2,063	1,967	14,818	12,968
Troubled Debt Restructurings, Recorded Balance With Payment Default	3,908	8,077	4,264	8,594
Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	1,448	196	2,624	6,940
Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	615	1,771	11,446	6,028
Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		748
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	8,540	6,422
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	3,000	0	3,000
Commercial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	8,540	6,422
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	3,000	0	3,000
Commercial [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	6,400
Commercial [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	7,851	22
Commercial [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		689
Commercial [Member] | Energy [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Energy [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Energy [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Energy [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Energy [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Energy [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Energy [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Energy [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial [Member] | Services [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	7,851	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Services [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Services [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Services [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Services [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	7,851	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Services [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Services [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	7,851	0
Commercial [Member] | Services [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial [Member] | Wholesale/retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	3,400
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Wholesale/retail [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Wholesale/retail [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Wholesale/retail [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Wholesale/retail [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	3,400
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Wholesale/retail [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	3,400
Commercial [Member] | Wholesale/retail [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Wholesale/retail [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial [Member] | Manufacturing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	3,000
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	3,000	0	3,000
Commercial [Member] | Manufacturing [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Manufacturing [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Manufacturing [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Manufacturing [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	3,000
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	3,000	0	3,000
Commercial [Member] | Manufacturing [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	3,000
Commercial [Member] | Manufacturing [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Manufacturing [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial [Member] | Healthcare [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	689	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Healthcare [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Healthcare [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Healthcare [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Healthcare [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	689	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Healthcare [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Healthcare [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Healthcare [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		689
Commercial [Member] | Other commercial and industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	22
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Other commercial and industrial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Other commercial and industrial [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Other commercial and industrial [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Other commercial and industrial [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	22
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial [Member] | Other commercial and industrial [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial [Member] | Other commercial and industrial [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	22
Commercial [Member] | Other commercial and industrial [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	329	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	329	445	329	445
Commercial Real Estate [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	329	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	329	445	329	445
Commercial Real Estate [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	329	0
Commercial Real Estate [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member] | Residential construction and land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	329	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	329	0	329	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	329	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	329	0	329	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	329	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Residential construction and land development [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member] | Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	445	0	445
Commercial Real Estate [Member] | Retail [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Retail [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Retail [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Retail [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	445	0	445
Commercial Real Estate [Member] | Retail [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Retail [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Retail [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member] | Office [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Office [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member] | Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Multifamily [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member] | Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Industrial [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Commercial Real Estate [Member] | Other commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Commercial Real Estate [Member] | Other commercial real estate [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	11,700	18,012	32,100	34,015
Troubled Debt Restructurings, Recorded Balance With Payment Default	33,483	28,008	35,570	29,272
Residential Mortgage [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	9,655	16,065	26,255	27,510
Troubled Debt Restructurings, Recorded Balance With Payment Default	29,942	23,376	31,673	24,126
Residential Mortgage [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	5,809	3,439	15,858	8,288
Residential Mortgage [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	3,846	12,626	10,397	19,222
Residential Mortgage [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	2,045	1,947	5,845	6,505
Troubled Debt Restructurings, Recorded Balance With Payment Default	3,541	4,632	3,897	5,146
Residential Mortgage [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	1,448	196	2,295	540
Residential Mortgage [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	597	1,751	3,491	5,965
Residential Mortgage [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		59
Residential Mortgage [Member] | Permanent mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	1,598	1,214	3,275	3,606
Troubled Debt Restructurings, Recorded Balance With Payment Default	2,364	2,758	2,543	3,254
Residential Mortgage [Member] | Permanent mortgage [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Residential Mortgage [Member] | Permanent mortgage [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Residential Mortgage [Member] | Permanent mortgage [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Residential Mortgage [Member] | Permanent mortgage [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	1,598	1,214	3,275	3,606
Troubled Debt Restructurings, Recorded Balance With Payment Default	2,364	2,758	2,543	3,254
Residential Mortgage [Member] | Permanent mortgage [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	1,448	196	2,150	540
Residential Mortgage [Member] | Permanent mortgage [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	150	1,018	1,125	3,066
Residential Mortgage [Member] | Permanent mortgage [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	9,655	16,228	27,098	28,638
Troubled Debt Restructurings, Recorded Balance With Payment Default	30,721	24,491	32,592	25,241
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	9,655	16,065	26,255	27,510
Troubled Debt Restructurings, Recorded Balance With Payment Default	29,942	23,376	31,673	24,126
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	5,809	3,439	15,858	8,288
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	3,846	12,626	10,397	19,222
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	163	843	1,128
Troubled Debt Restructurings, Recorded Balance With Payment Default	779	1,115	919	1,115
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	163	843	1,128
Residential Mortgage [Member] | Permanent mortgages guaranteed by US government agencies [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		0
Residential Mortgage [Member] | Home equity {Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	447	570	1,727	1,771
Troubled Debt Restructurings, Recorded Balance With Payment Default	398	759	435	777
Residential Mortgage [Member] | Home equity {Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Residential Mortgage [Member] | Home equity {Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Residential Mortgage [Member] | Home equity {Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Residential Mortgage [Member] | Home equity {Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	447	570	1,727	1,771
Troubled Debt Restructurings, Recorded Balance With Payment Default	398	759	435	777
Residential Mortgage [Member] | Home equity {Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	145	0
Residential Mortgage [Member] | Home equity {Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	447	570	1,523	1,771
Residential Mortgage [Member] | Home equity {Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0		59
Personal [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	18	20	104	41
Troubled Debt Restructurings, Recorded Balance With Payment Default	38	0	38	3
Personal [Member] | Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Troubled Debt Restructurings, Recorded Balance With Payment Default	0	0	0	0
Personal [Member] | Accruing [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Personal [Member] | Accruing [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Personal [Member] | Nonaccrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	18	20	104	41
Troubled Debt Restructurings, Recorded Balance With Payment Default	38	0	38	3
Personal [Member] | Nonaccrual [Member] | Payment Stream [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	0	0	0	0
Personal [Member] | Nonaccrual [Member] | Combination & Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	18	$ 20	104	$ 41
Personal [Member] | Nonaccrual [Member] | Interest Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Recorded Balance Modified During The Period	$ 0		$ 0