Consolidated Condensed Statements of Income (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Revenues:
Revenues	$ 10,803,000	$ 9,052,000	$ 30,500,000	$ 27,074,000
Expenses:
Advertising and promotion	748,000	893,000	2,393,000	2,455,000
Salaries and employee benefits	4,523,000	4,417,000	13,299,000	13,164,000
Production and distribution	1,198,000	1,226,000	3,608,000	3,809,000
Office and administration	1,205,000	1,103,000	3,417,000	3,203,000
Total expenses	7,674,000	7,639,000	22,717,000	22,631,000
Income from operations	3,129,000	1,413,000	7,783,000	4,443,000
Revenues and profits interests in EAM Trust	3,455,000	2,210,000	9,384,000	6,865,000
Income from securities transactions, net	167,000	140,000	451,000	377,000
Income before income taxes	6,751,000	3,763,000	17,618,000	11,685,000
Income tax provision	1,799,000	1,312,000	4,765,000	2,828,000
Net income	$ 4,952,000	$ 2,451,000	$ 12,853,000	$ 8,857,000
Earnings per share, basic & fully diluted (in dollars per share)	$ 0.51	$ 0.25	$ 1.33	$ 0.91
Weighted average number of common shares (in shares)	9,640,949	9,687,252	9,652,805	9,688,681
Subscription and Circulation [Member]
Revenues:
Revenues	$ 7,108,000	$ 7,201,000	$ 21,090,000	$ 21,755,000
License [Member]
Revenues:
Revenues	$ 3,695,000	$ 1,851,000	$ 9,410,000	$ 5,319,000