Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 76,945	$ 81,793	$ 34,674
Other comprehensive income (loss), net of tax:
Amortization of actuarial (gain) losses, net of taxes of $7, ($159) and ($120) for the years ended December 31, 2022, 2021 and 2020, respectively	(17)	341	270
Amortization of prior service credits, net of taxes of $8, $27 and $26 for the years ended December 31, 2022, 2021 and 2020, respectively	(19)	(58)	(59)
Unrecognized actuarial gains (losses), net of taxes of ($487), ($109) and $484 for the years ended December 31, 2022, 2021 and 2020, respectively	1,043	319	(1,112)
Change in net unrealized (losses) gains on securities available for sale, net of taxes of $28,900, $3,455 and ($2,169) for the years ended December 31, 2022, 2021 and 2020, respectively	(64,381)	(7,484)	4,787
Reclassification adjustment for net losses (gains) included in net income, net of taxes of ($3,401), $35 and ($216) for the years ended December 31, 2022, 2021 and 2020, respectively	7,547	(78)	485
Net unrealized (loss) gain on cash flow hedges, net of taxes of ($12,081), ($7,126) and $5,177 for the years ended December 31, 2022, 2021 and 2020, respectively	26,786	16,115	(11,658)
Change in fair value of liabilities related to instrument-specific credit risk, net of taxes of $386, ($237) and ($367) for the years ended December 31, 2022, 2021 and 2020, respectively	(763)	427	828
Total other comprehensive (loss) income, net of tax	(29,804)	9,582	(6,459)
Comprehensive net income	$ 47,141	$ 91,375	$ 28,215