CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUES	$ 4,427,443	$ 5,029,008	$ 3,766,185
OPERATING EXPENSES	4,254,824	4,634,482	3,489,207
OPERATING INCOME	172,619	394,526	276,978
OTHER INCOME (COSTS)
Interest and dividend income	14,728	3,873	1,226
Interest and other related financing costs	(9,094)	(7,726)	(8,914)
Other, net	8,662	(2,370)	3,797
TOTAL OTHER INCOME (COSTS)	14,296	(6,223)	(3,891)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	186,915	388,303	273,087
INCOME TAX PROVISION	44,751	93,655	62,628
NET INCOME FROM CONTINUING OPERATIONS	142,164	294,648	210,459
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX	53,269	3,561	3,062
NET INCOME	$ 195,433	$ 298,209	$ 213,521
BASIC EARNINGS PER COMMON SHARE
Continuing operations (in dollars per share)	$ 5.92	$ 11.98	$ 8.26
Discontinued operations (in dollars per share)	2.22	0.14	0.12
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	8.14	12.13	8.38
DILUTED EARNINGS PER COMMON SHARE
Continuing operations (in dollars per share)	5.77	11.55	7.86
Discontinued operations (in dollars per share)	2.16	0.14	0.11
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 7.93	$ 11.69	$ 7.98
AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	24,018,801	24,585,205	25,471,939
Diluted (in shares)	24,634,617	25,504,508	26,772,126