Consolidated Condensed Statement of Changes in Shareholders' Equity (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Common stock	Additional paid-in capital	Treasury stock	Retained earnings	Accumulated Other Comprehensive income/(loss)	Total
Balance at Apr. 30, 2012	$ 1,000	$ 991	$ (1,390)	$ 31,628	$ 85	$ 32,314
Balance (in shares) at Apr. 30, 2012	10,000,000		(103,619)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,348		3,348
Change in unrealized gains on securities, net of taxes					27	27
Purchase of treasury stock			(30)			(30)
Purchase of treasury stock (in shares)			(3,440)
Dividends declared				(2,969)		(2,969)
Balance at Oct. 31, 2012	1,000	991	(1,420)	32,007	112	32,690
Balance (in shares) at Oct. 31, 2012	10,000,000		(107,059)
Balance at Apr. 30, 2013	1,000	991	(1,572)	32,315	251	32,985
Balance (in shares) at Apr. 30, 2013	10,000,000		(123,572)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,061		3,061
Change in unrealized gains on securities, net of taxes					40	40
Purchase of treasury stock			(349)			(349)
Purchase of treasury stock (in shares)			(39,151)
Dividends declared				(2,954)		(2,954)
Balance at Oct. 31, 2013	$ 1,000	$ 991	$ (1,921)	$ 32,422	$ 291	$ 32,783
Balance (in shares) at Oct. 31, 2013	10,000,000		(162,723)