Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Class A Common Stock [Member]	Class B Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Balance at Apr. 30, 2013	$ 15,451	$ 387	$ 10	$ 335,857	$ (324,377)	$ (592)	$ 4,166
Balance (in shares) at Apr. 30, 2013		38,662,000	988,000
Net (loss) income	(163)				(191)		28
Other comprehensive loss	(125)					(125)
Issuances of Class A common stock	120	2		118
Issuances of Class A common stock, shares		282,000
Stock-based compensation	631			631
Contributions from noncontrolling interest holders	6						6
Other	(63)			(63)
Balance at Jul. 31, 2013	$ 15,857	$ 389	$ 10	$ 336,543	$ (324,568)	$ (717)	$ 4,200
Balance (in shares) at Jul. 31, 2013		38,944,000	988,000