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Note M - Supplemental Cash Flow Information	3 Months Ended
Note M - Supplemental Cash Flow Information	Jun. 30, 2020
Notes to Financial Statements
Cash Flow, Supplemental Disclosures [Text Block]	NOTE M — SUPPLEMENTAL CASH FLOW INFORMATION The Company paid interest of approximately $6,000 during the three months ended June 30, 2020 and did not pay any interest during the three months ended June 30, 2019. The Company did not pay any income taxes in the three months ended June 30, 2020 but did pay approximately $10,000 in three months ended June 30, 2019.