CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue, net (includes $17.2 million and $9.9 million with related parties for the three months ended June 30, 2022 and 2021, respectively, and $30.5 million and $15.2 million with related parties for the six months ended June 30, 2022 and 2021 respectively)	$ 351,207	$ 278,293	$ 682,154	$ 538,258
Operating expenses:
Total direct costs	252,211	203,642	484,481	385,180
Selling, general and administrative	33,215	26,973	62,581	52,711
Depreciation	4,707	3,951	8,977	7,763
Amortization	838	1,279	1,676	2,557
Total operating expenses	290,971	235,845	557,715	448,211
Income from operations	60,236	42,448	124,439	90,047
Other income, net:
Miscellaneous income, net	2,311	265	3,378	1,189
Interest expense, net	(548)	(27)	(494)	(41)
Total other income, net	1,763	238	2,884	1,148
Income before income taxes	61,999	42,686	127,323	91,195
Income tax provision	12,639	2,752	16,652	7,955
Net income	$ 49,360	$ 39,934	$ 110,671	$ 83,240
Net income per share attributable to common shareholders:
Basic	$ 1.52	$ 1.11	$ 3.28	$ 2.32
Diluted	$ 1.46	$ 1.06	$ 3.16	$ 2.20
Weighted average common shares outstanding:
Basic	32,493	35,894	33,696	35,825
Diluted	33,695	37,714	35,034	37,737
Direct Costs
Operating expenses:
Total direct costs	$ 132,118	$ 108,233	$ 257,552	$ 209,620
Reimbursable Out of Pocket Costs
Operating expenses:
Total direct costs	$ 120,093	$ 95,409	$ 226,929	$ 175,560