LONG-TERM DEBT - FUTURE AMORTIZATION (Details) - USD ($)
$ in Thousands
Apr. 30, 2016
Jan. 31, 2016
Mar. 07, 2014
Feb. 03, 2014
February 2014 Term Loans        
Debt Instrument        
2017 (remainder of year) $ 669      
2018 1,337      
2019 1,337      
2020 127,386      
Total 130,729 $ 130,729   $ 300,000
March 2014 Term Loans        
Debt Instrument        
2017 (remainder of year) 1,434      
2018 2,869      
2019 2,869      
2020 273,241      
Total $ 280,413 $ 280,413 $ 643,500