LEASES (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Operating lease cost		$ 1,068	$ 1,023
Operating lease payments		1,068	1,023
Operating lease right-of-use assets		7,419	858
Operating lease liabilities		$ 7,419	$ 858
Weighted average remaining lease term		7 years 8 months 12 days	8 months 12 days
Weighted average discount rate		2.30%	3.00%
2022		$ 1,072
2023		717
2024		420
2025		422
2026		409
2027 through 2041		$ 4,379
Lessor, Operating Lease, Existence of Option to Extend [true false]		true
Property, plant and equipment, gross		$ 621,402	$ 583,332
Lease income	$ 4,223		3,191
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term		20 years
Commercial real estate leased to third parties
Lessee, Lease, Description [Line Items]
Property, plant and equipment, gross		$ 51,384	51,426
Depreciation		$ 15,844	$ 14,784
Commercial real estate leased to third parties | Maximum
Lessee, Lease, Description [Line Items]
Lessor, renewal term		60 years