Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share-Based Compensation (Details)

v3.21.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share-Based Compensation (Details)
9 Months Ended
Sep. 30, 2021
segment
shares
Sep. 30, 2020
shares
Valuation assumption    
Risk-free interest rates 0.912%  
Risk-free interest rates, minimum   1.026%
Risk-free interest rates, maximum   1.399%
Expected life 5 years 6 years 3 months
Expected volatility 40.81% 34.60%
Expected dividend yield 0.00% 0.00%
Earnings Per Share    
Number of shares excluded to calculate diluted net earnings per share as their effect would have been antidilutive | shares 6,286,562 4,945,134
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]    
Number of operating segment 1  
Number of reporting segment 1