Quarterly report pursuant to Section 13 or 15(d)

RELATED PARTY TRANSACTIONS (Details)

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RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Related Party Transaction [Line Items]      
Right of use assets $ 24,288 $ 17,794  
Lease liability 24,499    
Dental Arts Labs      
Related Party Transaction [Line Items]      
Right of use assets 3,500    
Lease liability 3,500    
Annual commitment 600    
Lease expense paid $ 100    
Operating Lease Agreement With A T M R E LLC      
Related Party Transaction [Line Items]      
Right of use assets     $ 500
Lease liability     500
Annual commitment     200
Operating Lease Agreement With JES Besitzgesellschaft GmbH      
Related Party Transaction [Line Items]      
Right of use assets     200
Lease liability     200
Annual commitment     100
Operating Lease Agreement With Sitraco (UK) Limited      
Related Party Transaction [Line Items]      
Right of use assets     200
Lease liability     200
Annual commitment     $ 100