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Note N - Subsequent Events	12 Months Ended
Note N - Subsequent Events	Jun. 30, 2019
Notes to Financial Statements
Subsequent Events [Text Block]	N. Subsequent Events Effective July 1, 2019, we executed an amendment to our credit facility with Wells Fargo Bank, N.A. to extend the maturity date for our working line of credit from February 1, 2021 to November 1, 2022. The Credit Agreement provides us with a credit line of up to $10.0 million. The line of credit may be used to finance working capital requirements. There was no commitment fee required as part of this amendment. There are no amounts currently drawn under the line of credit. Management has evaluated subsequent events through September 24, 2019, the date the Statements were available to be issued and there are no subsequent events that would require adjustment to or disclosure in the Statements.