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Derivative Instrument and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Derivatives, Fair Value [Line Items]    
Asset derivatives $ 25,192 $ 16,504
Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Gross notional amount 50,000 50,000
Derivatives Designated as Hedging Instruments [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset derivatives 4,031 1,559
Derivatives Designated as Hedging Instruments [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability derivatives   0
Derivatives Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Gross notional amount 986,655 945,563
Derivatives Not Designated as Hedging Instruments [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset derivatives 21,161 14,945
Derivatives Not Designated as Hedging Instruments [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability derivatives 21,170 14,713
Cash Flow Hedge of Interest Rate Risk [Member] | Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Gross notional amount 50,000 50,000
Cash Flow Hedge of Interest Rate Risk [Member] | Derivatives Designated as Hedging Instruments [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset derivatives 4,031 1,559
Cash Flow Hedge of Interest Rate Risk [Member] | Derivatives Designated as Hedging Instruments [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability derivatives   0
Interest Rate Swap [Member] | Derivatives Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Gross notional amount 869,706 820,693
Interest Rate Swap [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset derivatives 21,010 14,702
Interest Rate Swap [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability derivatives 21,015 14,708
Credit Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Gross notional amount 105,692 106,671
Credit Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset derivatives 0 0
Credit Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability derivatives 0 1
Mortgage Banking [Member] | Derivatives Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Gross notional amount 11,257 18,199
Mortgage Banking [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset derivatives 151 243
Mortgage Banking [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability derivatives $ 155 $ 4