Post-effective amendment to a registration statement that is not immediately effective upon filing

BUSINESS SEGMENTS - Additional information (Details)

v3.21.1
BUSINESS SEGMENTS - Additional information (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenue, Major Customer [Line Items]      
Revenue from contract with customer $ 208,938,247 $ 304,201,203 $ 290,732,049
Customer concentration | Revenue      
Revenue, Major Customer [Line Items]      
Concentration risk (in percent)   17.00% 18.00%
Revenue from contract with customer   $ 49,085,000 $ 53,687,000
Customer concentration | Sales      
Revenue, Major Customer [Line Items]      
Concentration risk (in percent)   10.00% 10.00%