Earnings per Share (Details) (USD $)	3 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Attributable to Parent	$ 84,000	$ (259,000)
Earnings Per Share, Basic	$ 0.02	$ (0.05)
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Attributable to Parent	84,000	(259,000)
Undistributed Earnings Allocated to Participating Securities	(4,000)	0
Net Income (Loss) Available to Common Stockholders, Basic	$ 80,000	$ (259,000)
Weighted Average Number of Shares Outstanding, Basic	5,265,750	5,265,750
Earnings Per Share, Basic	$ 0.02	$ (0.05)