Other Comprehensive Income (Loss) - Changes in components of other comprehensive income (loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,079,081	$ 1,011,287	$ 982,517
Current period changes in other comprehensive income (loss)	(133,377)	23,706	(890)
Balance at end of year	1,053,595	1,079,081	1,011,287
Accumulated Other Comprehensive (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(45,919)	(69,625)	(68,735)
Current period changes in other comprehensive income (loss)	(133,377)	23,706	(890)
Balance at end of year	(179,296)	(45,919)	(69,625)
Unrealized (Losses) on Debt Securities Available for Sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	1,644	31,028	9,377
Current period changes in other comprehensive income (loss)	(137,126)	(29,384)	21,651
Balance at end of year	(135,482)	1,644	31,028
Unrealized Gains (Losses) on Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(4,917)	(16,856)	(8,474)
Current period changes in other comprehensive income (loss)	5,421	11,939	(8,382)
Balance at end of year	504	(4,917)	(16,856)
Employee Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(42,646)	(83,797)	(69,638)
Current period changes in other comprehensive income (loss)	(1,672)	41,151	(14,159)
Balance at end of year	$ (44,318)	$ (42,646)	$ (83,797)