CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUE	$ 1,017,948	$ 713,895	$ 1,903,164	$ 1,383,656
COST OF SERVICES	842,956	587,440	1,575,028	1,133,732
Gross profit	174,992	126,455	328,136	249,924
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	118,724	87,549	236,500	175,763
GAIN ON SALE OF ASSETS	(383)	(491)	(706)	(841)
Operating income	56,651	39,397	92,342	75,002
OTHER INCOME (EXPENSE):
Interest income	6	3	9	6
Interest expense	(3,026)	(1,360)	(5,155)	(2,857)
Changes in the fair value of contingent earn-out obligations	(115)	4,581	3,973	5,767
Other	(1)	161	55	92
Other income (expense)	(3,136)	3,385	(1,118)	3,008
INCOME BEFORE INCOME TAXES	53,515	42,782	91,224	78,010
PROVISION (BENEFIT) FOR INCOME TAXES	11,269	9,817	(37,784)	18,554
NET INCOME	$ 42,246	$ 32,965	$ 129,008	$ 59,456
INCOME PER SHARE:
Basic	$ 1.17	$ 0.91	$ 3.58	$ 1.64
Diluted	$ 1.17	$ 0.90	$ 3.57	$ 1.63
SHARES USED IN COMPUTING INCOME PER SHARE:
Basic	35,970	36,403	36,022	36,345
Diluted	36,073	36,566	36,130	36,533