Consolidated Statement of Stockholders' Deficit (USD $) In Thousands, except Share data	Total	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interests [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]
Balance at Apr. 30, 2014	$ (8,537)	$ 338,625	$ (347,472)	$ 39	$ (130)	$ 391	$ 10
Balance (in shares) at Apr. 30, 2014						39,086,000	988,000
Net income (loss)	207		(31)		238
Other comprehensive income	6			6
Issuances of Class A common stock	284	280				4
Issuances of Class A common stock, shares						459,000
Stock-based compensation	1,209	1,209
Contributions from noncontrolling interest holders	155				155
Other	15	15
Balance at Oct. 31, 2014	$ (6,661)	$ 340,129	$ (347,503)	$ 45	$ 263	$ 395	$ 10
Balance (in shares) at Oct. 31, 2014						39,545,000	988,000