Employee Benefit Plans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation obligation	$ 9,562		$ 9,050
Florida Public Utilities Company Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	599	$ 633
Expected return on plan assets	(724)	(668)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	69	110
Total periodic cost	(56)	$ 75
Rabbi Trust Associated With Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation obligation	$ 13,200		$ 12,300