Fair Value - Carrying Amount and Estimated Fair Value of Financial Assets and Liabilities (Details) - Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	$ 172,567	$ 212,563
Held-to-maturity securities, net	734,178	768,993
Non-marketable securities, at cost	15,549	15,549
Loans and leases, net	3,532,383	3,603,105
Financial liabilities:
Total deposits	4,885,014	4,699,139
Subordinated debentures	10,310	10,310
Fair Value [Member]
Financial assets:
Cash and cash equivalents	172,567	212,563
Held-to-maturity securities, net	604,131	610,953
Non-marketable securities, at cost	15,549	15,549
Loans and leases, net	3,526,525	3,523,057
Financial liabilities:
Total deposits	4,882,391	4,695,388
Subordinated debentures	12,180	11,738
Level 1 [Member] | Fair Value [Member]
Financial assets:
Cash and cash equivalents	172,567	212,563
Held-to-maturity securities, net	0	0
Non-marketable securities, at cost	0	0
Loans and leases, net	0	0
Financial liabilities:
Total deposits	0	0
Subordinated debentures	0	0
Level 2 [Member] | Fair Value [Member]
Financial assets:
Cash and cash equivalents	0	0
Held-to-maturity securities, net	532,147	537,384
Non-marketable securities, at cost	15,549	15,549
Loans and leases, net	0	0
Financial liabilities:
Total deposits	4,882,391	4,695,388
Subordinated debentures	12,180	11,738
Level 3 [Member] | Fair Value [Member]
Financial assets:
Cash and cash equivalents	0	0
Held-to-maturity securities, net	71,984	73,569
Non-marketable securities, at cost	0	0
Loans and leases, net	3,526,525	3,523,057
Financial liabilities:
Total deposits	0	0
Subordinated debentures	$ 0	$ 0