Note 14 - Concentration	9 Months Ended
Jan. 31, 2022
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	Note 14 - Concentration: During the nine months ended January 31, 2022, 33.0% of total publishing revenues of $30,397,000 were derived from a single customer.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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