Earnings per Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Attributable to Parent	$ 31,000	$ 66,000	$ 359,000	$ 447,000
Earnings Per Share, Basic	$ 0.01	$ 0.01	$ 0.06	$ 0.08
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Attributable to Parent	31,000	66,000	359,000	447,000
Undistributed Earnings Allocated to Participating Securities	(2,000)	(3,000)	(22,000)	(20,000)
Net Income (Loss) Available to Common Stockholders, Basic	$ 29,000	$ 63,000	$ 337,000	$ 427,000
Weighted Average Number of Shares Outstanding, Basic	5,265,750	5,265,750	5,265,750	5,265,750
Earnings Per Share, Basic	$ 0.01	$ 0.01	$ 0.06	$ 0.08