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Fair Value Measurements (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impaired loans carrying amount $ 1,356,947,000   $ 1,356,947,000   $ 1,175,024,000
Impaired loan impairment charge 1,000 $ 230,000 22,000 $ 239,000  
Fair Value, Nonrecurring [Member] | Impaired Loans [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impaired loans carrying amount 4,000,000.0   4,000,000.0   4,400,000
Impaired loans fair value 3,700,000   3,700,000   3,990,000
Impaired loan impairment charge     319,000 $ 360,000  
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loans [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impaired loans fair value 3,700,000   3,700,000   3,990,000
Financial liabilities measured at fair value $ 0   $ 0   $ 0