Other Comprehensive Income (Loss) - Changes in components of other comprehensive income (loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,053,595	$ 1,079,081	$ 1,011,287
Current period changes in other comprehensive income (loss)	20,561	(133,377)	23,706
Balance at end of year	1,040,335	1,053,595	1,079,081
Accumulated Other Comprehensive (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(179,296)	(45,919)	(69,625)
Current period changes in other comprehensive income (loss)	20,561	(133,377)	23,706
Balance at end of year	(158,735)	(179,296)	(45,919)
Unrealized (Losses) on Debt Securities Available for Sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(135,482)	1,644	31,028
Current period changes in other comprehensive income (loss)	21,833	(137,126)	(29,384)
Balance at end of year	(113,649)	(135,482)	1,644
Unrealized Gains (Losses) on Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	504	(4,917)	(16,856)
Current period changes in other comprehensive income (loss)	(918)	5,421	11,939
Balance at end of year	(414)	504	(4,917)
Employee Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(44,318)	(42,646)	(83,797)
Current period changes in other comprehensive income (loss)	(354)	(1,672)	41,151
Balance at end of year	$ (44,672)	$ (44,318)	$ (42,646)