ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary of Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 569,153
Ending balance	562,617
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(19,387)	$ (10,923)
Gains arising during period	2,326	1,467
Amounts reclassified from accumulated other comprehensive loss	(870)	(10,183)
Income tax benefit	(63)
Net other comprehensive income (loss)	1,519	(8,716)
Ending balance	(17,868)	(19,639)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(15,187)	(18,021)
Amounts reclassified from accumulated other comprehensive loss	(227)	(131)
Income tax benefit	(63)
Net other comprehensive income (loss)	(164)	(131)
Ending balance	(15,351)	(18,152)
Accumulated Other-than-Temporary Impairment of Investment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,878)	(3,087)
Amounts reclassified from accumulated other comprehensive loss	106	104
Net other comprehensive income (loss)	106	104
Ending balance	(2,772)	(2,983)
Interest Rate Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,322)	10,185
Gains arising during period	2,326	1,467
Amounts reclassified from accumulated other comprehensive loss	(749)	(10,156)
Net other comprehensive income (loss)	1,577	(8,689)
Ending balance	$ 255	$ 1,496