Credit Facility And Debt (Details) - USD ($)	3 Months Ended
	Sep. 29, 2017	Jun. 30, 2017
Line of Credit Facility [Line Items]
Outstanding borrowing	$ 9,000,000	$ 9,000,000
Silicon Valley Bank
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 30,000,000
Early termination fee percentage	1.00%
Percentage of Singapore subsidiary's accounts receivable to be included in the calculation of borrowing capacity	30.00%
Available credit under credit facility	$ 7,900,000
Line of credit facility, current borrowing capacity	$ 19,600,000
Weight average interest rate	4.75%
Additional spread on applicable rate in event of default	2.00%
Silicon Valley Bank | Minimum
Line of Credit Facility [Line Items]
Inclusion of AR of certain high credit quality customers for borrowing capacity calculation, AR aging	90 days
Silicon Valley Bank | Maximum
Line of Credit Facility [Line Items]
Inclusion of AR of certain high credit quality customers for borrowing capacity calculation, AR aging	120 days
Silicon Valley Bank | Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis	prime rate
Silicon Valley Bank | Prime Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Silicon Valley Bank | Prime Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Line of Credit | Silicon Valley Bank
Line of Credit Facility [Line Items]
Outstanding borrowing	$ 9,000,000
Letter of Credit | Silicon Valley Bank
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	12,000,000
Letters of credit	2,700,000
Singapore Line of Credit | Silicon Valley Bank
Line of Credit Facility [Line Items]
Credit facility sublimit available for Singapore	30,000,000
New Zealand
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	400,000
New Zealand | Short-term Advances
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	300,000
Available credit under credit facility	300,000
New Zealand | Standby Letters of Credit
Line of Credit Facility [Line Items]
Letters of credit	$ 100,000