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 Interest [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 (loss) income	(154)		(290)		136
Other comprehensive income	12			12
Issuances of Class A common stock	287	283				4
Issuances of Class A common stock, shares						365,000
Stock-based compensation	562	562
Contributions from noncontrolling interest holders	155				155
Excess tax benefit on the vesting of share based awards	59	59
Balance at Jul. 31, 2014	$ (7,616)	$ 339,529	$ (347,762)	$ 51	$ 161	$ 395	$ 10
Balance (in shares) at Jul. 31, 2014						39,451,000	988,000