Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2016	Jan. 01, 2016	Jan. 02, 2015
Cash flows from operating activities:
Net income	$ 47,480	$ 43,599	$ 40,701
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and leasehold improvements	6,131	5,479	5,404
Amortization of premiums and accretion of discounts on short-term investments	2	595	885
Deferred rent expense	(340)	(65)	(273)
Provision for contract losses and doubtful accounts	2,452	929	1,718
Stock-based compensation	13,333	12,959	13,079
Deferred income tax provision	(2,602)	(3,827)	(6,077)
Excess tax benefit for equity incentive plans	0	(6,396)	(5,100)
Changes in operating assets and liabilities:
Accounts receivable	(1,284)	(3,138)	(11,106)
Prepaid expenses and other assets	(598)	421	(5,320)
Accounts payable and accrued liabilities	(370)	7,718	6,142
Accrued payroll and employee benefits	2,920	2,639	6,744
Deferred revenues	(178)	(424)	1,455
Net cash provided by operating activities	66,946	60,489	48,252
Cash flows from investing activities:
Capital expenditures	(14,393)	(5,379)	(4,947)
Purchase of short-term investments	(51,000)	(43,946)	(5,260)
Maturity of short-term investments	37,950	22,290	11,642
Sale of short-term investments	0	0	1,000
Net cash (used in) provided by investing activities	(27,443)	(27,035)	2,435
Cash flows from financing activities:
Excess tax benefit for equity incentive plans	0	6,396	5,100
Payroll taxes for restricted stock units	(7,685)	(7,365)	(6,356)
Repurchase of common stock	(24,456)	(23,314)	(30,921)
Exercise of share-based payment awards	1,756	3,014	2,107
Dividends and dividend equivalent rights	(18,781)	(15,647)	(13,058)
Net cash used in financing activities	(49,166)	(36,916)	(43,128)
Effect of foreign currency exchange rates on cash and cash equivalents	(1,121)	(277)	(1,017)
Net (decrease) increase in cash and cash equivalents	(10,784)	(3,739)	6,542
Cash and cash equivalents at beginning of year	125,751	129,490	122,948
Cash and cash equivalents at end of year	$ 114,967	$ 125,751	$ 129,490