Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	$ 400		$ 400
Investments, at fair value	11,693		11,693		$ 10,576
Deferred compensation obligation	9,001		9,001		7,060
Rabbi Trust Investments Assets	11,700		11,700		$ 10,600
Florida Public Utilities Company Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	110	$ 124	220	$ 248
Defined Benefit Plan Amounts Recognized Gain (Loss)	110		220
Recognized from accumulated other comprehensive loss	21	24	42	48
Recognized from regulatory asset	89	$ 100	178	200
Chesapeake Pension SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Amounts Recognized Gain (Loss)	124			$ 248
Defined Benefit Plan, Plan Assets, Benefits Paid	$ 200		$ 300