Significant Customers	12 Months Ended
Jun. 30, 2018
Significant Customers [Abstract]
Significant Customers	Note 8. Significant Customers A significant portion of the Company's business is the production of military and industrial electronic equipment for use by the U.S. and foreign governments and certain industrial customers. Sales to two domestic customers accounted for approximately 60% of total sales in fiscal year 2018. Sales to two domestic customers accounted for approximately 45% of total sales in fiscal year 2017. Export sales in fiscal years 2018 and 2017 were approximately $3,112,000 and $1,730,000, respectively.

Significant Customers

12 Months Ended

Jun. 30, 2018

Note 8. Significant Customers

A significant portion of the Company's business is the production of military and industrial electronic equipment for use by the U.S. and foreign governments and certain industrial customers. Sales to two domestic customers accounted for approximately 60% of total sales in fiscal year 2018. Sales to two domestic customers accounted for approximately 45% of total sales in fiscal year 2017.

Export sales in fiscal years 2018 and 2017 were approximately $3,112,000 and $1,730,000, respectively.