Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net income	$ 79,965	$ 47,547
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	10,424	9,443
Amortization of intangible assets	1,016	2,182
Provision for expected credit losses	11,420	7,012
Share-based compensation	8,812	6,365
Deferred income taxes	(8,107)	(3,016)
Acquisition-related contingent consideration	660	1,284
Amortization of debt issuance costs and other	236	646
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, billed and unbilled	(73,201)	(93,739)
Notes receivable	(35,937)	(6,851)
Prepaid expenses and other assets	(5,612)	321
Accounts payable, accrued expenses and other	4,317	1,315
Income taxes	1,691	5,658
Accrued compensation	(271,044)	(230,967)
Billings in excess of services provided	542	(1,406)
Net cash used in operating activities	(274,818)	(254,206)
Investing activities
Purchases of property and equipment and other	(4,640)	(18,012)
Maturity of short-term investment	25,246	0
Net cash provided by (used in) investing activities	20,606	(18,012)
Financing activities
Borrowings under revolving line of credit	280,000	90,000
Repayments under revolving line of credit	(75,000)	(45,000)
Purchase and retirement of common stock	0	(20,982)
Share-based tax withholdings net of option exercises	(8,712)	(9,064)
Deposits and other	2,297	813
Net cash provided by financing activities	198,585	15,767
Effect of exchange rate changes on cash and cash equivalents	(3,635)	3,302
Net decrease in cash and cash equivalents	(59,262)	(253,149)
Cash and cash equivalents, beginning of period	303,222	491,688
Cash and cash equivalents, end of period	243,960	238,539
Supplemental cash flow disclosures
Cash paid for interest	765	3,625
Cash paid for income taxes and tax credits, net of refunds	25,943	12,331
Non-cash investing and financing activities:
Issuance of stock units under incentive compensation plans	$ 2,805	$ 2,274