EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2025

Retirement Benefits [Abstract]

Employee Benefit Plan Amounts Recognized in the Consolidated Balance Sheets and Consolidated Statements of Income

As a result of the plan’s actuarial projections, First Financial recorded expense in the Company's Consolidated Statements of Income, as set forth in the following table.

	Three months ended
	March 31,
(Dollars in thousands)	2025		2024
Service cost	$	2,775	$	2,425
Interest cost	1,425		1,300
Expected return on assets	(2,550)		(2,625)
Net actuarial loss	625		375
Net periodic benefit cost (income)	$	2,275	$	1,475