ACCUMULATED OTHER COMPREHENSIVE LOSS (Changes in Components of AOCI, Net of Related Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance, beginning			$ 1,169,748
Other comprehensive income, net of tax	$ 10,706	$ 3,440	23,193	$ 13,136
Balance, ending	1,328,832		1,328,832
Accumulated Other Comprehensive Loss [Member]
Balance, beginning	127	(22,917)	(12,360)	(32,613)
Current period change, excluding amounts reclassified from accumulated other comprehensive loss	11,153	393	22,844	4,116
Amounts reclassified from accumulated other comprehensive loss	(447)	3,047	349	9,020
Other comprehensive income, net of tax	10,706	3,440	23,193	13,136
Balance, ending	10,833	(19,477)	10,833	(19,477)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance, beginning	6,865	(14,276)	(4,863)	(24,098)
Current period change, excluding amounts reclassified from accumulated other comprehensive loss	10,559	133	21,491	3,982
Amounts reclassified from accumulated other comprehensive loss	(447)	3,047	349	9,020
Balance, ending	16,977	(11,096)	16,977	(11,096)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance, beginning	(6,738)	(8,641)	(7,497)	(8,515)
Current period change, excluding amounts reclassified from accumulated other comprehensive loss	594	260	1,353	134
Balance, ending	$ (6,144)	$ (8,381)	$ (6,144)	$ (8,381)