Note M - Subsequent Events	6 Months Ended
Dec. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	M. Subsequent Event On January 14, 2022, the Board of Directors authorized an additional $3.0 million increase to the Repurchase Plan, thus bringing the total authorized repurchase amount to $18.0 million. Under the Repurchase Plan, we may, from time to time, purchase shares of our common stock, depending upon market conditions, in open market or privately negotiated transactions. On February 8, 2022, we entered into a second amendment to our credit facility with Wells Fargo that is effective January 31, 2022 and modifies the annual limit imposed upon the company’s ability to repurchase stock are issue dividends. This amendment increased this limit from $5.0 million annually to $7.0 million annually.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration