Condensed Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 866,000	$ 617,000
Unrealized gain on securities:
Unrealized holding gains arising during period	324,000	607,000
Reclassification adjustment for gains (losses) included in net income	(130,000)	44,000
Income tax expense related to other comprehensive income	(56,000)	(188,000)
Other Comprehensive Income	138,000	463,000
Comprehensive Income	$ 1,004,000	$ 1,080,000