Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 30,142	$ 29,124
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization of property, equipment and leasehold improvements	2,324	1,988
Provision for contract losses and doubtful accounts	1,279	892
Stock-based compensation	7,340	7,063
Deferred income tax provision	1,600	1,725
Changes in operating assets and liabilities:
Accounts receivable	3,196	(3,842)
Prepaid expenses and other current assets	(2,193)	(7,777)
Change in operating leases	(614)	(774)
Accounts payable and accrued liabilities	2,577	(2,271)
Accrued payroll and employee benefits	(29,616)	(28,564)
Deferred revenues	(5,603)	(4,267)
Net cash provided by (used in) operating activities	10,432	(6,703)
Cash flows from investing activities:
Capital expenditures	(1,482)	(5,668)
Net cash used in investing activities	(1,482)	(5,668)
Cash flows from financing activities:
Payroll taxes for restricted stock units	(6,796)	(9,920)
Repurchase of common stock	(5,466)
Exercise of stock-based payment awards	618	680
Dividends and dividend equivalents rights	(15,583)	(14,500)
Net cash used in financing activities	(27,227)	(23,740)
Effect of foreign currency exchange rates on cash and cash equivalents	(208)	302
Net decrease in cash and cash equivalents	(18,485)	(35,809)
Cash and cash equivalents at beginning of period	187,150	161,458
Cash and cash equivalents at end of period	$ 168,665	$ 125,649