Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 30, 2018	Dec. 29, 2017
Current assets:
Cash and cash equivalents	$ 103,152	$ 124,794
Short-term investments	75,485	71,604
Accounts receivable, net of allowance for contract losses and doubtful accounts of $3,805 and $3,526 at March 30, 2018 and December 29, 2017, respectively	117,239	110,100
Prepaid expenses and other assets	9,585	9,011
Total current assets	305,461	315,509
Property, equipment and leasehold improvements, net	40,420	35,014
Goodwill	8,607	8,607
Deferred income taxes	31,265	30,437
Deferred compensation plan assets	53,547	48,676
Other assets	1,159	1,346
Total assets	440,459	439,589
Current liabilities:
Accounts payable and accrued liabilities	16,492	14,741
Accrued payroll and employee benefits	45,240	70,064
Deferred revenues	7,912	8,302
Total current liabilities	69,644	93,107
Other liabilities	3,471	3,326
Deferred compensation	59,501	52,776
Deferred rent	1,218	1,292
Total liabilities	133,834	150,501
Stockholders’ equity:
Common stock, $0.001 par value; 80,000 shares authorized; 32,853 shares issued at March 30, 2018 and December 29, 2017	33	33
Additional paid-in capital	221,972	210,263
Accumulated other comprehensive income (loss)
Investment securities, available-for-sale	(276)	(236)
Foreign currency translation adjustments	(1,054)	(1,793)
Accumulated other comprehensive income (loss)	(1,330)	(2,029)
Retained earnings	310,978	303,990
Treasury stock, at cost; 6,849 and 7,084 shares held at March 30, 2018 and December 29, 2017, respectively	(225,028)	(223,169)
Total stockholders’ equity	306,625	289,088
Total liabilities and stockholders’ equity	$ 440,459	$ 439,589