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DEBT (Details) - USD ($)
12 Months Ended
Oct. 28, 2016
Jul. 22, 2010
Dec. 31, 2019
Dec. 31, 2018
Sep. 26, 2018
Oct. 27, 2016
May 28, 2015
May 27, 2015
Dec. 31, 2012
Sep. 07, 2007
Apr. 30, 2007
Apr. 09, 2007
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                        
Aggregate principal amount of debt                 $ 25,000,000.0      
Debt instrument, interest rate     3.60%                  
Prudential Agreement, fixed interest rate     4.04%                  
Credit Agreement                        
Debt Instrument                        
Total borrowing capacity of facility $ 450,000,000.0                      
Remaining borrowing capacity     $ 276,500,000 $ 218,200,000                
Line of Credit Facility                        
Current borrowing capacity 300,000,000.0         $ 150,000,000.0            
Increase request amount available $ 150,000,000.0                      
Outstanding borrowings     19,000,000.0 76,300,000                
Letters of credit outstanding     $ 4,500,000 $ 5,500,000                
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 on variable rate 0.75%                      
Credit Agreement | LIBOR | Maximum                        
Debt Instrument                        
Debt instrument basis spread on variable rate 1.60%                      
New York Life Investors LLC                        
Debt Instrument                        
Total borrowing capacity of facility         $ 200,000,000.0     $ 150,000,000.0        
Remaining borrowing capacity               125,000,000.0        
New York Life Investors LLC | Senior Notes                        
Debt Instrument                        
Aggregate principal amount of debt               75,000,000.0        
Prudential                        
Debt Instrument                        
Total borrowing capacity of facility             $ 250,000,000.0 $ 200,000,000.0       $ 175,000,000.0
Debt instrument, increase, additional borrowings   $ 25,000,000.0                    
Prudential | B-1 Notes | Notes Payable to Bank                        
Debt Instrument                        
Aggregate principal amount of debt                     $ 110,000,000.0  
Prudential Agreement, fixed interest rate     5.79%                  
Debt instrument, term     10 years                  
Prudential | B-2 Notes | Notes Payable to Bank                        
Debt Instrument                        
Aggregate principal amount of debt                   $ 40,000,000.0