CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $) In Thousands, except Share data	Total	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]
Balance at Apr. 30, 2012	$ 18,231	$ 288,348	$ (270,235)	$ (1,952)	$ 1,800	$ 260	$ 10
Balance (in shares) at Apr. 30, 2012						25,991,000	988,000
Net loss	(8,379)		(8,371)		(8)
Other comprehensive loss	(2,045)			(2,045)
Issuances of Class A common stock	148	144				4
Issuances of Class A common stock						376,000
Stock-based compensation	675	675
Contributions from noncontrolling interest holder	721				721
Other	205	205
Balance at Jul. 31, 2012	$ 9,556	$ 289,372	$ (278,606)	$ (3,997)	$ 2,513	$ 264	$ 10
Balance (in shares) at Jul. 31, 2012						26,367,000	988,000