v3.7.0.1
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%