DERIVATIVE FINANCIAL INSTRUMENTS DERIVATIVE FINANCIAL INSTRUMENTS - INTEREST RATE SWAP AGREEMENTS (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Apr. 30, 2018 |
Jul. 31, 2017 |
|
| 2016 Interest Rate Swap | ||
| 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 | |
| Gain on Discontinuation of Cash Flow Hedge | $ 0.9 | |
| 2018 Interest Rate Swap | ||
| DERIVATIVE FINANCIAL INSTRUMENTS | ||
| Derivative - Fixed Interest Rate | 2.949% | |
| Derivative - Index Interest Rate Floor | 0.00% | |
| Derivative - Notional Amount | $ 200.0 | |
| Fixed Interest Rate, Including Impact of Margin | 4.949% | |
| 2017 Term Loan - Following January 2018 Amendment | Variable Rate Based on Eurodollar Rate | Eurodollar loans | ||
| DERIVATIVE FINANCIAL INSTRUMENTS | ||
| Interest rate margin (as a percent) | 2.00% | |