Fair Value - Fair value of derivatives is based on valuation models using observable market data as of the measurement date (Level 2 inputs) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair value measurement
Securities available-for-sale	$ 1,218,287	$ 1,259,137
U.S. Government agencies
Fair value measurement
Securities available-for-sale	88,114	91,440
Mortgage Backed Securities - residential
Fair value measurement
Securities available-for-sale	545,799	569,885
Mortgage Backed Securities - commercial
Fair value measurement
Securities available-for-sale	7,397	7,483
Collateralized mortgage obligations
Fair value measurement
Securities available-for-sale	175,427	180,829
State and municipal
Fair value measurement
Securities available-for-sale	363,749	370,811
Municipal taxable
Fair value measurement
Securities available-for-sale	34,001	34,285
U.S. Treasury
Fair value measurement
Securities available-for-sale	912	1,402
Collateralized debt obligations
Fair value measurement
Securities available-for-sale	2,888	3,002
Level 2
Fair value measurement
Securities available-for-sale	1,214,594	1,254,955
Derivative Assets	3,095	2,878
Derivative Liabilities	(3,095)	(2,878)
Level 2 | U.S. Government agencies
Fair value measurement
Securities available-for-sale	88,114	91,440
Level 2 | Mortgage Backed Securities - residential
Fair value measurement
Securities available-for-sale	545,799	569,885
Level 2 | Mortgage Backed Securities - commercial
Fair value measurement
Securities available-for-sale	7,397	7,483
Level 2 | Collateralized mortgage obligations
Fair value measurement
Securities available-for-sale	175,427	180,829
Level 2 | State and municipal
Fair value measurement
Securities available-for-sale	362,944	369,631
Level 2 | Municipal taxable
Fair value measurement
Securities available-for-sale	34,001	34,285
Level 2 | U.S. Treasury
Fair value measurement
Securities available-for-sale	912	1,402
Level 3
Fair value measurement
Securities available-for-sale	3,693	4,182
Level 3 | State and municipal
Fair value measurement
Securities available-for-sale	805	1,180
Level 3 | Collateralized debt obligations
Fair value measurement
Securities available-for-sale	$ 2,888	$ 3,002