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, 2013	$ 1,000	$ 991	$ (1,572)	$ 32,315	$ 251	$ 32,985us-gaap_StockholdersEquity
Balance (in shares) at Apr. 30, 2013	10,000,000		(123,572)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				5,087		5,087us-gaap_NetIncomeLoss
Change in unrealized gains on securities, net of taxes					(48)	(48)
Purchase of treasury stock			(509)			(509)
Purchase of treasury stock (in shares)			(55,073)
Dividends declared				(4,428)		(4,428)us-gaap_DividendsCommonStock
Balance at Jan. 31, 2014	1,000	991	(2,081)	32,974	203	33,087us-gaap_StockholdersEquity
Balance (in shares) at Jan. 31, 2014	10,000,000		(178,645)
Balance at Apr. 30, 2014	1,000	991	(2,122)	33,183	246	33,298us-gaap_StockholdersEquity
Balance (in shares) at Apr. 30, 2014	10,000,000		(182,071)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				6,195		6,195us-gaap_NetIncomeLoss
Change in unrealized gains on securities, net of taxes					(33)	(33)
Purchase of treasury stock			(71)			(71)
Purchase of treasury stock (in shares)			(5,061)
Dividends declared				(4,416)		(4,416)us-gaap_DividendsCommonStock
Balance at Jan. 31, 2015	$ 1,000	$ 991	$ (2,193)	$ 34,962	$ 213	$ 34,973us-gaap_StockholdersEquity
Balance (in shares) at Jan. 31, 2015	10,000,000		(187,132)

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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