INCOME TAXES - Deferred tax assets (Details) - USD ($) |
Dec. 30, 2015 |
Dec. 31, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Feb. 07, 2014 |
Jun. 09, 2009 |
|---|---|---|---|---|---|---|
| INCOME TAXES | ||||||
| Net deferred tax assets | $ 69,483,000 | $ 126,198,000 | ||||
| Shares of common stock received in exchange for common units | 200,000 | |||||
| Capital gain | $ 4,600,000 | |||||
| Cumulative undistributed earnings of foreign subsidiaries | $ 14,200,000 | |||||
| 5.875% Senior Subordinated Notes due 2022 | ||||||
| INCOME TAXES | ||||||
| Interest rate of debt (as a percent) | 5.875% | 5.875% | 5.875% | 5.875% | ||
| 8.75% Senior Fixed Rate Notes due 2019 | ||||||
| INCOME TAXES | ||||||
| Interest rate of debt (as a percent) | 8.75% |