Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 30, 2016
Current assets:
Cash and cash equivalents	$ 87,086	$ 114,967
Short-term investments	67,817	58,755
Accounts receivable, net of allowance for contract losses and doubtful accounts of $3,661 and $3,417 at March 31, 2017 and December 30, 2016, respectively	96,346	87,409
Prepaid expenses and other assets	12,368	12,913
Total current assets	263,617	274,044
Property, equipment and leasehold improvements, net	36,572	36,710
Goodwill	8,607	8,607
Deferred income taxes	41,715	42,166
Deferred compensation plan assets	46,699	41,153
Other assets	952	1,064
Total assets	398,162	403,744
Current liabilities:
Accounts payable and accrued liabilities	10,204	10,073
Accrued payroll and employee benefits	41,067	62,539
Deferred revenues	6,145	7,624
Total current liabilities	57,416	80,236
Other liabilities	2,117	2,005
Deferred compensation	52,399	46,503
Deferred rent	1,525	1,654
Total liabilities	113,457	130,398
Stockholders’ equity:
Common stock, $0.001 par value; 80,000 shares authorized; 32,853 shares issued at March 31, 2017 and December 30, 2016	33	33
Additional paid-in capital	205,273	194,632
Accumulated other comprehensive income (loss)
Investment securities, available-for-sale	(110)	(146)
Foreign currency translation adjustments	(2,844)	(2,980)
Accumulated other comprehensive income (loss)	(2,954)	(3,126)
Retained earnings	296,025	291,243
Treasury stock, at cost; 6,982 and 7,256 shares held at March 31, 2017 and December 30, 2016, respectively	(213,672)	(209,436)
Total stockholders’ equity	284,705	273,346
Total liabilities and stockholders’ equity	$ 398,162	$ 403,744