Fair Value - Carrying Amounts and Estimated Fair Values of Company's Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial Assets:
Interest Bearing Time Deposits with Banks	$ 500	$ 500
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(5,329,075)	(5,252,963)
Time Deposits	(916,601)	(767,042)
Long-term Debt	(114,628)
Carrying Value
Financial Assets:
Cash and Short-term Investments	188,792	115,330
Interest Bearing Time Deposits with Banks	500	500
Loans, Net	4,072,818	3,918,184
Accrued Interest Receivable	31,280	30,595
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(4,412,474)	(4,485,921)
Time Deposits	(916,601)	(767,042)
Short-term Borrowings	(56,862)	(65,968)
Long-term Debt	(153,269)	(127,969)
Accrued Interest Payable	(8,468)	(7,073)
Fair Value
Financial Assets:
Cash and Short-term Investments	188,792	115,330
Interest Bearing Time Deposits with Banks	500	500
Loans, Net	3,993,595	3,801,738
Accrued Interest Receivable	31,280	30,595
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(4,412,474)	(4,485,921)
Time Deposits	(911,059)	(759,217)
Short-term Borrowings	(56,862)	(65,968)
Long-term Debt	(152,801)	(127,084)
Accrued Interest Payable	(8,468)	(7,073)
Fair Value | Level 1
Financial Assets:
Cash and Short-term Investments	69,249	78,805
Interest Bearing Time Deposits with Banks	0	0
Loans, Net	0	0
Accrued Interest Receivable	0	0
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(4,412,474)	(4,485,921)
Time Deposits	0	0
Short-term Borrowings	0	(25,000)
Long-term Debt	0	0
Accrued Interest Payable	0	0
Fair Value | Significant Other Observable Inputs (Level 2)
Financial Assets:
Cash and Short-term Investments	119,543	36,525
Interest Bearing Time Deposits with Banks	500	500
Loans, Net	0	0
Accrued Interest Receivable	8,499	10,014
Financial Liabilities:
Demand, Savings, and Money Market Deposits	0	0
Time Deposits	(911,059)	(759,217)
Short-term Borrowings	(56,862)	(40,968)
Long-term Debt	(77,591)	(52,522)
Accrued Interest Payable	(8,116)	(6,701)
Fair Value | Level 3
Financial Assets:
Cash and Short-term Investments	0	0
Interest Bearing Time Deposits with Banks	0	0
Loans, Net	3,993,595	3,801,738
Accrued Interest Receivable	22,781	20,581
Financial Liabilities:
Demand, Savings, and Money Market Deposits	0	0
Time Deposits	0	0
Short-term Borrowings	0	0
Long-term Debt	(75,210)	(74,562)
Accrued Interest Payable	$ (352)	$ (372)