DERIVATIVE FINANCIAL INSTRUMENTS DERIVATIVE FINANCIAL INSTRUMENTS - INTEREST RATE SWAP AGREEMENT (Details) - Interest rate swap
$ in Millions
3 Months Ended
Apr. 30, 2016
USD ($)
DERIVATIVE FINANCIAL INSTRUMENTS  
Derivative - Fixed Interest Rate 4.143%
Derivative - Index Interest Rate Floor 0.75%
Derivative - Basis Spread on Variable Rate 2.75%
Derivative - Notional Amount $ 200.0
Derivative - Inception Date Nov. 01, 2016
Derivative - Maturity Date Sep. 06, 2019