Employee Benefit Plans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation obligation	$ 9,703		$ 9,703		$ 9,050
Florida Public Utilities Company Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	599	$ 633	1,198	$ 1,266
Expected return on plan assets	(724)	(668)	(1,448)	(1,336)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	69	110	138	220
Total periodic cost	(56)	$ 75	(112)	$ 150
Rabbi Trust Associated With Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation obligation	$ 13,600		$ 13,600		$ 12,300