Derivative Instruments and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 20,120	$ 6,731
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	50,000	100,000
Derivatives Designated as Hedging Instruments [Member] \| Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	311
Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	873,566	353,145
Derivatives Not Designated as Hedging Instruments [Member] \| Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	20,120	6,731
Derivatives Not Designated as Hedging Instruments [Member] \| Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	19,924	6,745
Cash Flow Hedge of Interest Rate Risk [Member] \| Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	50,000	100,000
Cash Flow Hedge of Interest Rate Risk [Member] \| Derivatives Designated as Hedging Instruments [Member] \| Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	311
Cash Flow Hedge of Interest Rate Risk [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	100,000
Interest Rate Swap [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	631,907	272,962
Interest Rate Swap [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	19,626	6,599
Interest Rate Swap [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	19,837	6,720
Credit Contract [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	113,434	68,324
Credit Contract [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	23	13
Credit Contract [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	86	18
Mortgage Banking [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount	28,225	11,859
Mortgage Banking [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	471	119
Mortgage Banking [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 1	$ 7

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Balance Type:	debit
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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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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.

+ References

No definition available.

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