XML 50 R41.htm IDEA: XBRL DOCUMENT v3.22.2
STOCK-BASED COMPENSATION - Fair value (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Restricted shares of common stock        
Stock-based compensation        
Fair value, shares vested $ 2,241,000 $ 3,174,000 $ 2,241,000 $ 3,174,000