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LEASES AND RELATED PARTY LEASES - Narrative (Details)
 9 Months Ended 12 Months Ended
Sep. 30, 2019
renewal_option
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Jun. 30, 2019
USD ($)
Operating Leased Assets [Line Items]        
Number of renewal options (or more) | renewal_option 1      
Operating lease expense   $ 19,600,000    
Future minimum lease payments, finance leases   0    
Right of use asset - operating leases   94,530,000    
Operating lease liability   109,757,000    
Operating lease expense, Topic 840     $ 16,300,000  
Future minimum lease payments, capital leases     $ 0  
NEW JERSEY        
Operating Leased Assets [Line Items]        
Operating lease, term     18 years  
Right of use asset - operating leases       $ 35,600,000
Operating lease liability       $ 35,600,000
Affiliated Entity        
Operating Leased Assets [Line Items]        
Operating lease expense   $ 300,000    
Operating lease expense, Topic 840     $ 300,000  
Percent of manufacturing facility owned by corporation whose shareholders are trusts whose beneficiaries include family members of company's former director   50.00%    
Annual rate of lease agreement   $ 300,000    
Affiliated Entity | Five Year Option Lease From November 1, 2032 Through October 31, 2037        
Operating Leased Assets [Line Items]        
Option to extend lease, years   5 years    
Period for extended lease   November 1, 2032 through October 31, 2037    
Affiliated Entity | Five Year Option Lease From November 1, 2037 Through October 31, 2042        
Operating Leased Assets [Line Items]        
Option to extend lease, years   5 years    
Period for extended lease   November 1, 2037 through October 31, 2042