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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 Income (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 (11,771)       (11,281)   (490)
Other comprehensive income 630         630  
Issuances of Class A common stock 241 3   238      
Issuances of Class A common stock, shares   387,000          
Stock-based compensation and related severance expense 1,851     1,851      
Contributions from noncontrolling interest holders 11           11
Balance at Jan. 31, 2014 $ 6,413 $ 390 $ 10 $ 337,946 $ (335,658) $ 38 $ 3,687
Balance (in shares) at Jan. 31, 2014   39,049,000 988,000