CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUE	$ 1,296,430	$ 1,017,948	$ 2,471,070	$ 1,903,164
COST OF SERVICES	1,068,510	842,956	2,037,745	1,575,028
Gross profit	227,920	174,992	433,325	328,136
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	136,430	118,724	271,462	236,500
GAIN ON SALE OF ASSETS	(592)	(383)	(1,104)	(706)
Operating income	92,082	56,651	162,967	92,342
OTHER INCOME (EXPENSE):
Interest income	92	6	1,489	9
Interest expense	(3,918)	(3,026)	(7,994)	(5,155)
Changes in the fair value of contingent earn-out obligations	(3,098)	(115)	(5,480)	3,973
Other	44	(1)	45	55
Other income (expense)	(6,880)	(3,136)	(11,940)	(1,118)
INCOME BEFORE INCOME TAXES	85,202	53,515	151,027	91,224
PROVISION (BENEFIT) FOR INCOME TAXES	15,726	11,269	24,335	(37,784)
NET INCOME	$ 69,476	$ 42,246	$ 126,692	$ 129,008
INCOME PER SHARE:
Basic	$ 1.94	$ 1.17	$ 3.54	$ 3.58
Diluted	$ 1.93	$ 1.17	$ 3.53	$ 3.57
SHARES USED IN COMPUTING INCOME PER SHARE:
Basic	35,822	35,970	35,817	36,022
Diluted	35,906	36,073	35,907	36,130