Loans, Allowance for Credit Losses and Credit Quality Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Tdrs Recorded Investment On Accrual Status	$ 18,129	$ 19,599
Tdrs Recorded Investment On Nonaccrual Status	23,842	24,766
Financing Receivable Recorded Investment Trouble Debt Restructuring	41,971	44,365
Amount Of Specific Reserves Included In Allowance For Loan Losses Associated With Trouble Debt Restructuring		855
Additional Commitments To Lend To Borrower For Trouble Debt Restructuring	$ 163	$ 63

Additional commitments to lend to a borrower for trouble debt restructuring.

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of specific reserves included in the allowance for loan losses associated with trouble debt restructuring.

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- Definition

Financing receivable recorded investment trouble debt restructuring.

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No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Troubled Debt Restructurings recorded investment that are on accrual status as of the balance sheet date.

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No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

Troubled Debt Restructurings recorded investment that are on nonaccrual status as of the balance sheet date.

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No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

+ Details

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Period Type:	duration