Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income	$ 59,369	$ 54,872
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and leasehold improvements	4,810	4,174
Provision for contract losses and doubtful accounts	2,359	1,286
Stock-based compensation	12,917	12,286
Deferred income tax provision	2,264	1,697
Changes in operating assets and liabilities:
Accounts receivable	(869)	(7,002)
Prepaid expenses and other current assets	1,769	(21)
Change in operating leases	79	(657)
Accounts payable and accrued liabilities	2,555	(9,116)
Accrued payroll and employee benefits	(18,548)	(16,186)
Deferred revenues	(7,934)	(7,491)
Net cash provided by operating activities	58,771	33,842
Cash flows from investing activities:
Capital expenditures	(2,628)	(11,116)
Net cash used in investing activities	(2,628)	(11,116)
Cash flows from financing activities:
Payroll taxes for restricted stock units	(6,796)	(9,920)
Repurchase of common stock	(5,710)
Exercise of stock-based payment awards	2,453	1,243
Dividends and dividend equivalents rights	(29,776)	(27,717)
Net cash used in financing activities	(39,829)	(36,394)
Effect of foreign currency exchange rates on cash and cash equivalents	(202)	384
Net change in cash and cash equivalents	16,112	(13,284)
Cash and cash equivalents at beginning of period	187,150	161,458
Cash and cash equivalents at end of period	$ 203,262	$ 148,174