CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUE	$ 1,378,124	$ 1,120,012	$ 3,849,194	$ 3,023,176
COST OF SERVICES	1,100,625	917,788	3,138,370	2,492,816
Gross profit	277,499	202,224	710,824	530,360
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	142,935	121,194	414,397	357,694
GAIN ON SALE OF ASSETS	(579)	(406)	(1,683)	(1,112)
Operating income	135,143	81,436	298,110	173,778
OTHER INCOME (EXPENSE):
Interest income	952	5	2,441	14
Interest expense	(1,886)	(3,609)	(9,880)	(8,764)
Changes in the fair value of contingent earn-out obligations	(8,727)	(3,443)	(14,207)	530
Other	(44)	46	1	101
Other income (expense)	(9,705)	(7,001)	(21,645)	(8,119)
INCOME BEFORE INCOME TAXES	125,438	74,435	276,465	165,659
PROVISION (BENEFIT) FOR INCOME TAXES	20,313	12,920	44,648	(24,864)
NET INCOME	$ 105,125	$ 61,515	$ 231,817	$ 190,523
INCOME PER SHARE:
Basic	$ 2.93	$ 1.72	$ 6.47	$ 5.30
Diluted	$ 2.93	$ 1.71	$ 6.46	$ 5.28
SHARES USED IN COMPUTING INCOME PER SHARE:
Basic	35,820	35,853	35,819	35,966
Diluted	35,917	35,972	35,910	36,078