Receivables, net (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021		Dec. 29, 2019	Dec. 28, 2019	Dec. 29, 2018
Current and long-term receivables balances
Accounts receivable	$ 185,599	$ 196,990
Unbilled accounts receivable	155,689	144,364
Long-term receivables	5,098	3,655
Total receivables	346,386	345,009
Less allowance for doubtful accounts	(3,692)	(2,867)	[1]	$ (2,868)	$ (869)	$ (3,936)
Total receivables, net	$ 342,694	$ 342,142

[1] Beginning balance for the year ended January 2, 2021 reflects the cumulative-effect adjustment recorded in connection with the adoption of ASU 2016-13, “Measurement of Credit Losses on Financial Instruments” on the first day of fiscal 2020.