Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 28, 2018	Dec. 29, 2017
Current assets:
Cash and cash equivalents	$ 127,059	$ 124,794
Short-term investments	81,495	71,604
Accounts receivable, net of allowance for contract losses and doubtful accounts of $4,066 and $3,526, respectively	105,814	110,100
Prepaid expenses and other assets	12,244	9,011
Total current assets	326,612	315,509
Property, equipment and leasehold improvements, net	46,103	35,014
Goodwill	8,607	8,607
Deferred income taxes	34,090	30,437
Deferred compensation plan assets	52,286	48,676
Other assets	1,238	1,346
Total assets	468,936	439,589
Current liabilities:
Accounts payable and accrued liabilities	12,283	14,741
Accrued payroll and employee benefits	76,855	70,064
Deferred revenues	9,166	8,302
Total current liabilities	98,304	93,107
Other liabilities	2,548	3,326
Deferred compensation plan liabilities	52,708	52,776
Deferred rent	1,467	1,292
Total liabilities	155,027	150,501
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock, $.001 par value; 2,000 shares authorized; no shares outstanding	0	0
Common stock, $.001 par value; 120,000 shares authorized; 65,707 shares issued	66	66
Additional paid-in capital	227,283	210,230
Accumulated other comprehensive (loss)
Investment securities, available for sale	(45)	(236)
Foreign currency translation adjustments	(2,808)	(1,793)
Accumulated other comprehensive income (loss)	(2,853)	(2,029)
Retained earnings	342,024	303,990
Treasury stock, at cost: 14,208 and 14,169 shares held, respectively	(252,611)	(223,169)
Total stockholders' equity	313,909	289,088
Total liabilities and stockholders' equity	$ 468,936	$ 439,589