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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jul. 02, 2021	Jan. 01, 2021
Statement Of Financial Position [Abstract]
Accounts receivable and unbilled revenue, allowance	$ 1,290	$ 605
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,250,000	1,250,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	125,000,000	125,000,000
Common stock, shares issued	58,063,146	57,600,158
Treasury stock, at cost, shares	28,234,246	27,609,752

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Amount of allowance for credit loss on accounts receivable, classified as current.

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