INCOME TAXES - Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation between the effective income tax rate, as computed on income from continuing operations before income taxes, and the statutory federal income tax rate
Statutory federal rate (as a percent)	21.00%	21.00%	21.00%
Income tax provision at the statutory federal rate	$ 39,252	$ 81,544	$ 57,348
Federal income tax effects of:
State income taxes	(2,156)	(3,973)	(2,658)
Nondeductible expenses	4,040	5,606	3,596
Life insurance proceeds and changes in cash surrender value	(962)	575	(866)
Alternative fuel tax credit	(1,302)	(2,449)
Net increase (decrease) in valuation allowances	44	(464)	887
Net increase in uncertain tax positions			854
Settlement of share-based compensation	(3,989)	(6,693)	(6,021)
Foreign tax credits generated	(506)	(849)	(404)
Federal research and development tax credits	(75)	278	(2,044)
Other	(368)	311	(1,127)
Federal income tax provision	33,978	73,886	49,565
State income tax provision	10,267	18,920	12,659
Foreign income tax provision	506	849	404
Total provision for income taxes	$ 44,751	$ 93,655	$ 62,628
Effective tax rate (as a percent)	23.90%	24.10%	22.90%