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SEGMENT AND RELATED INFORMATION - Additional Information (Details)
12 Months Ended
Dec. 31, 2021
USD ($)
segment
business
Dec. 31, 2020
USD ($)
Segment Reporting Information    
Number of business units (business units) | business 7  
Number of reportable segment (segment) | segment 3  
Payment for construction to expand building $ 12,800,000 $ 9,900,000
Enterprise Software    
Segment Reporting Information    
Payment for construction to expand building 12,800,000 6,600,000
Appraisal and Tax    
Segment Reporting Information    
Payment for construction to expand building 0 $ 3,300,000
NIC    
Segment Reporting Information    
Payment for construction to expand building $ 0