EMPLOYEE BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2022

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 as set forth in the following table. The amounts are recognized in First Financial’s Consolidated Statements of Income related to the Company's pension plan.

	Three months ended				Nine months ended
	September 30,				September 30,
(Dollars in thousands)	2022		2021		2022		2021
Service cost	$	2,153	$	2,234	$	6,912	$	6,895
Interest cost	661		549		1,923		1,607
Expected return on assets	(2,743)		(2,515)		(8,240)		(7,603)
Amortization of prior service cost	(76)		(105)		(226)		(307)
Net actuarial loss	416		672		1,221		1,938
Net periodic benefit cost (income)	$	411	$	835	$	1,590	$	2,530