BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Plans [Abstract]
Contribution made to defined benefit pension plan by employer				$ 2,900
Pension Benefits [Member]
Pension Plans [Abstract]
Contribution made to defined benefit pension plan by employer				100
Net periodic benefit cost [Abstract]
Service cost	$ 1,240	$ 1,480	$ 2,480	2,960
Interest cost	1,334	1,259	2,668	2,518
Expected return on plan assets	(4,756)	(4,695)	(9,512)	(9,391)
Amortization of unrecognized net loss	211	900	422	1,800
Amortization of prior service cost	154	94	308	189
Net periodic (benefit)	(1,817)	(962)	(3,634)	(1,924)
Post-retirement Benefits [Member]
Net periodic benefit cost [Abstract]
Service cost	0	0	0	0
Interest cost	11	11	22	22
Expected return on plan assets	0	0	0	0
Amortization of unrecognized net loss	9	11	18	22
Amortization of prior service cost	(45)	(44)	(90)	(89)
Net periodic (benefit)	$ (25)	$ (22)	$ (50)	(45)
Steuben Trust Company Pension Plan
Pension Plans [Abstract]
Contribution made to defined benefit pension plan by employer				$ 90