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Allowance for Doubtful Accounts
12 Months Ended
Dec. 31, 2019
Allowance for Doubtful Accounts [Abstract]  
Allowance for Doubtful Accounts Allowance for Doubtful Accounts
 
The activity in the allowance for doubtful accounts was as follows during the years ended December 31, 2019 and 2018:
 
 20192018
Balance at the beginning of the year$63,727  $83,789  
Provision/(recoveries) for bad debts189,441  (14,000) 
Charge-offs(28,168) (6,062) 
Balance at the end of the year$225,000  $63,727