Consolidated Condensed Statement of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands		Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Apr. 30, 2017		10,000,000		(288,335)
Balance at Apr. 30, 2017		$ 1,000	$ 991	$ (3,781)	$ 39,186	$ 458	$ 37,854
Net income					2,215		2,215
Change in unrealized gains on securities, net of taxes						92	92
Purchase of treasury stock (in shares)				(2,353)
Purchase of treasury stock				$ (40)			(40)
Dividends declared	[1]				(1,748)		(1,748)
Balance (in shares) at Jul. 31, 2017		10,000,000		(290,688)
Balance at Jul. 31, 2017		$ 1,000	991	$ (3,821)	39,653	550	38,373
Balance (in shares) at Apr. 30, 2018		10,000,000		(308,380)
Balance at Apr. 30, 2018		$ 1,000	991	$ (4,135)	44,902	783	43,541
Net income					3,104		3,104
Change in unrealized gains on securities, net of taxes						426	426
Purchase of treasury stock (in shares)				(2,286)
Purchase of treasury stock				$ (46)			(46)
Dividends declared	[2]				(1,841)		(1,841)
Balance (in shares) at Jul. 31, 2018		10,000,000		(310,666)
Balance at Jul. 31, 2018		$ 1,000	$ 991	$ (4,181)	$ 46,165	$ 1,209	$ 45,184

[1] Dividends declared per common share were $0.18 for the three months ending July 31, 2017.

[2] Dividends declared per common share were $0.19 for the three months ending July 31, 2018.