Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 30, 2022
Current assets:
Cash and cash equivalents	$ 148,174	$ 161,458
Accounts receivable, net of allowance for contract losses and doubtful accounts of $6,109 and $6,193 at June 30, 2023 and December 30, 2022, respectively	175,830	170,114
Prepaid expenses and other current assets	20,624	17,585
Total current assets	344,628	349,157
Property, equipment and leasehold improvements, net	76,793	65,539
Operating lease right-of-use assets	25,636	18,007
Goodwill	8,607	8,607
Deferred income taxes	52,212	53,909
Deferred compensation plan assets	94,067	89,437
Other assets	2,341	2,006
Total assets	604,284	586,662
Current liabilities:
Accounts payable and accrued liabilities	19,838	29,115
Accrued payroll and employee benefits	87,609	105,822
Deferred revenues	11,343	18,834
Operating lease liabilities	5,750	5,258
Total current liabilities	124,540	159,029
Other liabilities	3,211	2,355
Deferred compensation plan liabilities	96,412	91,183
Operating lease liabilities	23,042	13,343
Total liabilities	247,205	265,910
Stockholders’ equity:
Common stock, $0.001 par value; 120,000 shares authorized; 65,707 shares issued at June 30, 2023 and December 30, 2022	66	66
Additional paid-in capital	317,346	301,002
Accumulated other comprehensive loss
Foreign currency translation adjustments	(3,260)	(3,587)
Retained earnings	555,354	528,810
Treasury stock, at cost; 14,858 and 15,064 shares held at June 30, 2023 and December 30, 2022, respectively	(512,427)	(505,539)
Total stockholders’ equity	357,079	320,752
Total liabilities and stockholders’ equity	$ 604,284	$ 586,662