Income Taxes - Expense (Benefit) Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Effective Income Tax Rate Reconciliation, Amount
U.S. federal statutory tax rate (in dollars)	$ 3,898	$ 2,905
State and local income taxes, net of federal income tax effect (in dollars)	813	606
Energy related tax credits (in dollars)	(48)	(94)
Other items (in dollars)	(14)	24
Total income tax expense	$ 4,649	$ 3,441
Effective Income Tax Rate Reconciliation, Percent
U.S. federal statutory tax rate (as a percent)	21.00%	21.00%
State and local income taxes, net of federal income tax effect (as a percent)	4.40%	4.40%
Energy related tax credit (as a percent)	(0.30%)	(0.70%)
Other items (as a percent)	(0.10%)	0.20%
Total income tax expense (as a percent)	25.00%	24.90%