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Note 9 - Intangible Assets (Details) - USD ($)
$ in Thousands
Jan. 31, 2016
Jan. 31, 2015
Disclosure Text Block [Abstract]    
Finite-Lived Intangible Assets, Net $ 133,562 $ 115,126
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 26,100  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 21,300  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 19,300  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 18,600  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 15,200  
Finite-Lived Intangible Assets, Amortization Expense, after Year Five $ 33,100