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Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Dec. 31, 2021
Junior subordinated debentures $ 49,752   $ 49,752 $ 56,472
Notional amount, Assets 1,381,477   1,381,477 1,524,031
Short term advances and brokered CD's 871,500   871,500 996,500
Derivative instruments 64,582   64,582 (14,388)
Customer [Member]        
Derivative instruments 111,400   111,400 114,000
Bank [Member]        
Derivative instruments 111,400   111,400 114,000
Customer and Bank [Member]        
Derivative instruments 222,900   222,900 228,000
Cash Flow Hedging [Member]        
Amount reclassified from accumulated other comprehensive loss to interest expense 1,000 $ 2,600    
Amount to be reclassified from the accumulated comprehensive income (loss) into earnings     4,100  
Not Designated as Hedging Instrument [Member]        
Notional amount, Assets 222,900   222,900 228,000
Designated as Hedging Instrument [Member]        
Notional amount, Assets 260,809   260,809 312,722
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]        
Amount of hedged item 287,100   287,100 299,600
Notional amount, Assets 871,500   871,500 996,500
Interest Rate Swap [Member]        
Notional amount, Assets 287,100   287,100 299,600
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]        
Notional amount, Assets 111,446   111,446 113,988
Derivative instruments $ (18,698)   $ (18,698) (3,355)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]        
Notional amount, Assets       641,500
Derivative instruments       $ (9,387)