Credit Facility and Debt (Details) - USD ($)	9 Months Ended	12 Months Ended
	Apr. 03, 2020	Jun. 28, 2019	Jun. 10, 2019	Sep. 28, 2018
Line of Credit Facility [Line Items]
Outstanding borrowings	$ 9,000,000	$ 9,000,000
Silicon Valley Bank
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity			$ 25,000,000
Available credit under credit facility	14,500,000
Line of credit facility, current borrowing capacity	$ 25,000,000
Weighted-average interest rate	4.24%
Additional spread on applicable rate in event of default	5.00%
Silicon Valley Bank | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.75%
Silicon Valley Bank | Minimum | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Silicon Valley Bank | Maximum | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Silicon Valley Bank | Singapore Line of Credit
Line of Credit Facility [Line Items]
Credit facility sublimit available for Singapore			25,000,000
Silicon Valley Bank | Line of Credit
Line of Credit Facility [Line Items]
Outstanding borrowings	$ 9,000,000	$ 9,000,000
Weighted-average interest rate	3.75%	6.00%
Quick assets, percent of unbilled receivables threshold				50.00%
Quick assets, amount of unbilled receivables threshold				$ 7,000,000
Silicon Valley Bank | Letter of Credit
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity			$ 12,000,000
Letters of credit outstanding	$ 1,500,000
Bank of New Zealand | New Zealand
Line of Credit Facility [Line Items]
Outstanding borrowings	100,000
Bank of New Zealand | Line of Credit | New Zealand
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	310,000
Bank of New Zealand | Short-term Advances | New Zealand
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 221,000	$ 200,000.0
Singapore subsidiary | Silicon Valley Bank | Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%