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Consolidated Statement of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Total
Additional Paid-In Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interests [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 (54,463)   (54,142)   (321)    
Other comprehensive (loss) income 1,360     1,360      
Issuances of Class A common stock 2,840 2,828       $ 12  
Issuances of Class A common stock, shares           1,171,000  
Sale of Class A common stock, net 42,184 42,069       $ 115  
Sale of Class A common stock, net (in shares)           11,500,000  
Stock-based compensation 2,516 2,516          
Contributions from noncontrolling interest holders 2,687       2,687    
Other 96 96          
Balance at Apr. 30, 2013 15,451 335,857 (324,377) (592) 4,166 $ 387 $ 10
Balance (in shares) at Apr. 30, 2013           38,662,000 988,000
Net loss (27,404)   (23,095)   (4,309)    
Other comprehensive (loss) income 631     631      
Issuances of Class A common stock 368 364       $ 4  
Issuances of Class A common stock, shares           424,000  
Stock-based compensation 2,404 2,404          
Contributions from noncontrolling interest holders 13       13    
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 (5,810)   (6,018)   208    
Other comprehensive (loss) income 19     19      
Issuances of Class A common stock 429 424       $ 5  
Issuances of Class A common stock, shares           501,000  
Stock-based compensation 1,639 1,639          
Contributions from noncontrolling interest holders 155       155    
Other 85 85          
Balance at Dec. 31, 2014 (12,020) 340,773 (353,490) 58 233 $ 396 $ 10
Balance (in shares) at Dec. 31, 2014           39,587,000 988,000
Net loss (11,781)   (12,969)   1,188    
Other comprehensive (loss) income (51)     (51)      
Issuances of Class A common stock 486 481       $ 5  
Issuances of Class A common stock, shares           477,000  
Stock-based compensation 3,079 3,079          
Distributions to noncontrolling interest holders (1,495)       (1,495)    
Other 185 185          
Balance at Dec. 31, 2015 $ (21,597) $ 344,518 $ (366,459) $ 7 $ (74) $ 401 $ 10
Balance (in shares) at Dec. 31, 2015           40,064,000 988,000