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
Purchase of treasury stock			$ (535)			$ (535)
Balance at Jul. 31, 2016	$ 1,000	991	$ (3,575)	40,229	279	38,924
Balance (in shares) at Apr. 30, 2016	10,000,000		(243,411)
Balance at Apr. 30, 2016	$ 1,000	991	$ (3,040)	35,524	125	34,600
Net income				6,358		6,358
Change in unrealized gains on securities, net of taxes					154	154
Purchase of treasury stock (in shares)			(32,714)
Dividends declared				(1,653)		(1,653)
Balance (in shares) at Jul. 31, 2016	10,000,000		(276,125)
Purchase of treasury stock			$ (40)			(40)
Balance at Jul. 31, 2017	$ 1,000	991	$ (3,821)	39,653	550	38,373
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)
Dividends declared				$ (1,748)
Balance (in shares) at Jul. 31, 2017	10,000,000		(290,688)