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DEBT (Details) - USD ($)
Oct. 28, 2016
Jun. 30, 2019
Sep. 26, 2018
Jul. 30, 2018
Dec. 31, 2012
Line of Credit Facility          
Cross default trigger, minimum   $ 10,000,000.0      
Minimum          
Line of Credit Facility          
Debt instrument covenant total leverage ratio   1.00      
Debt instrument covenant total interest ratio   1.00      
Maximum          
Line of Credit Facility          
Debt instrument covenant total leverage ratio   3.50      
Debt instrument covenant total interest ratio   3.00      
Tax increment financing debt          
Debt Instrument          
Debt instrument, interest rate   3.60%      
Aggregrate principal amount of debt         $ 25,000,000.0
Credit Agreement          
Debt Instrument          
Total borrowing capacity of facility $ 450,000,000.0        
Remaining borrowing capacity   $ 171,700,000      
Line of Credit Facility          
Current borrowing capacity 300,000,000.0        
Increase amount available $ 150,000,000.0        
Outstanding borrowings   123,300,000      
Letters of credit outstanding   5,000,000.0      
Credit Agreement | Minimum          
Line of Credit Facility          
Facility fee (as a percentage) 0.10%        
Credit Agreement | Maximum          
Line of Credit Facility          
Facility fee (as a percentage) 0.275%        
Credit Agreement | LIBOR | Minimum          
Debt Instrument          
Debt instrument basis spread of variable rate 0.75%        
Credit Agreement | LIBOR | Maximum          
Debt Instrument          
Debt instrument basis spread of variable rate 1.60%        
Prudential          
Debt Instrument          
Total borrowing capacity of facility   250,000,000.0      
Remaining borrowing capacity   150,000,000.0      
New York Life Investors LLC          
Debt Instrument          
Total borrowing capacity of facility       $ 200,000,000.0  
Remaining borrowing capacity   $ 125,000,000.0      
New York Life Investors LLC | Senior Notes          
Debt Instrument          
Shelf Agreement, fixed interest rate   4.04%      
Aggregrate principal amount of debt     $ 75,000,000.0