XML 83 R65.htm IDEA: XBRL DOCUMENT v3.20.1
Revenue - Contract Balances (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]    
Accounts receivable, net $ 3,977,571 $ 5,596,719
Contract liabilities (unearned revenue) $ 5,597,479 $ 6,466,766
Length of contract with customers 1 year