Securities Held to Maturity (Summary of Volume of State and Political Subdivision Securities Held in Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	$ 97,116	$ 98,060
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	3,187
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	8,674	5
Debt Securities, Held-to-maturity, Fair Value	88,442	$ 101,242
TEXAS
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	15,251
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	1,283
Debt Securities, Held-to-maturity, Fair Value	13,968
CALIFORNIA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	9,770
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	669
Debt Securities, Held-to-maturity, Fair Value	9,101
PENNSYLVANIA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	8,557
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	692
Debt Securities, Held-to-maturity, Fair Value	7,865
FLORIDA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	7,530
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	797
Debt Securities, Held-to-maturity, Fair Value	6,733
MICHIGAN
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	6,969
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	684
Debt Securities, Held-to-maturity, Fair Value	$ 6,285

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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