Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 02, 2021	Jan. 01, 2021
Current assets:
Cash and cash equivalents	$ 184,521	$ 197,525
Short-term investments	29,999	45,001
Accounts receivable, net of allowance for contract losses and doubtful accounts of $4,481 and $3,995 at April 2, 2021 and January 1, 2021, respectively	124,211	111,565
Prepaid expenses and other current assets	14,824	12,741
Total current assets	353,555	366,832
Property, equipment and leasehold improvements, net	60,473	59,823
Operating lease right-of-use assets	18,467	19,322
Goodwill	8,607	8,607
Deferred income taxes	39,315	40,539
Deferred compensation plan assets	94,395	83,731
Other assets	2,210	1,242
Total assets	577,022	580,096
Current liabilities:
Accounts payable and accrued liabilities	18,411	16,327
Accrued payroll and employee benefits	54,490	83,194
Deferred revenues	8,906	11,800
Operating lease liabilities	6,135	5,987
Total current liabilities	87,942	117,308
Other liabilities	3,470	2,986
Deferred compensation plan liabilities	95,289	83,961
Operating lease liabilities	12,713	14,343
Total liabilities	199,414	218,598
Stockholders’ equity:
Common stock, $0.001 par value; 120,000 shares authorized; 65,707 shares issued at April 2, 2021 and January 1, 2021	66	66
Additional paid-in capital	274,012	265,328
Accumulated other comprehensive income (loss)
Investment securities, available-for-sale	61	65
Foreign currency translation adjustments	(1,754)	(1,997)
Accumulated other comprehensive income (loss)	(1,693)	(1,932)
Retained earnings	439,717	421,809
Treasury stock, at cost; 13,584 and 13,903 shares held at April 2, 2021 and January 1, 2021, respectively	(334,494)	(323,773)
Total stockholders’ equity	377,608	361,498
Total liabilities and stockholders’ equity	$ 577,022	$ 580,096