Stockholders' Equity - Accumulated Other Comprehensive (Loss) Income (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 845,025
Realized gain on sale of securities, net of tax	(82)
Realized gain due to settlement and curtailment, net of tax	107
Other comprehensive (loss) income, net of reclassifications and tax	(123,329)
Ending balance	760,511
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(11,619)
Ending balance	(134,923)
Unrealized Loss on Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,946)
Realized gain on sale of securities, net of tax	(82)
Realized gain due to settlement and curtailment, net of tax	0
Other comprehensive (loss) income, net of reclassifications and tax	(132,025)
Ending balance	(138,053)
Unrecognized Net Pension and Postretirement Costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,881)
Realized gain on sale of securities, net of tax	0
Realized gain due to settlement and curtailment, net of tax	107
Other comprehensive (loss) income, net of reclassifications and tax	249
Ending balance	(1,525)
Unrealized (Loss) Gain on Cash Flow Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,792)
Realized gain on sale of securities, net of tax	0
Realized gain due to settlement and curtailment, net of tax	0
Other comprehensive (loss) income, net of reclassifications and tax	8,447
Ending balance	$ 4,655