XML 54 R30.htm IDEA: XBRL DOCUMENT v2.4.0.6
Variable Interest Entities (Details) (USD $)
Apr. 30, 2013
Jan. 31, 2013
Apr. 30, 2012
Jan. 31, 2012
Condensed consolidated balance sheets related to consolidated VIEs        
Cash and cash equivalents $ 169,387,000 $ 175,142,000 $ 175,309,000 $ 156,524,000
Property, plant and equipment 3,248,000 5,309,000    
TOTAL ASSETS 225,586,000 234,724,000 224,689,000  
Accounts payable 28,474,000 32,699,000    
Accrued expenses 9,075,000 9,488,000    
TOTAL LIABILITIES 99,042,000 115,556,000    
Variable interest entity, primary beneficiary [Member]
        
Condensed consolidated balance sheets related to consolidated VIEs        
Cash and cash equivalents 278,000 190,000    
Property, plant and equipment 3,248,000 5,309,000    
TOTAL ASSETS 3,526,000 5,499,000    
Accounts payable 208,000 334,000    
Accrued expenses 365,000 747,000    
TOTAL LIABILITIES $ 573,000 $ 1,081,000