Employee Benefits - Asset Allocation (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 241,182	$ 263,906
Actual % of total	100.00%	100.00%
Target allocation	100.00%
Hedge portfolio:
Defined Benefit Plan Disclosure [Line Items]
Target allocation	80.00%
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 147,336	$ 166,063
Actual % of total	61.10%	62.90%
Foreign Bonds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 15,960	$ 0
Actual % of total	6.60%	0.00%
Federal Agency
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 5,185	$ 0
Actual % of total	2.10%	0.00%
Private Placement
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 3,319	$ 0
Actual % of total	1.40%	0.00%
Mortgage/Asset Backed Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 732	$ 0
Actual % of total	0.30%	0.00%
Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 546	$ 785
Actual % of total	0.20%	0.30%
Liquid assets separate account fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 8,872	$ 4,475
Actual % of total	3.70%	1.70%
Short-term income separate account fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 5,169	$ 0
Actual % of total	2.10%	0.00%
Return seeking portfolio:
Defined Benefit Plan Disclosure [Line Items]
Target allocation	20.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 0	$ 53,981
Actual % of total	0.00%	20.50%
U.S. property separate account fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 6,688	$ 25,407
Actual % of total	2.80%	9.60%
LargeCap S&P 500 index
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 31,968
Actual % of total	13.30%
MidCap S&P 400 index
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 6,227
Actual % of total	2.60%
SmallCap S&P 600 index
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 4,163
Actual % of total	1.70%
International equity index
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 5,017
Actual % of total	2.10%
United Life annuity
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 0	$ 13,195
Actual % of total	0.00%	5.00%