v3.21.1
Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2021
Summary of Significant Accounting Policies  
Schedule of roll forward of the allowance for doubtful accounts

 

 

 

 

 

 

 

 

 

Three Months Ended

 

 

March 31, 

 

March 31, 

 

    

2021

    

2020

Allowance for doubtful accounts, beginning of period

 

$

27,162

 

$

2,467

Bad debt expense

 

 

8,098

 

$

24,411

Allowance for doubtful accounts, end of period

 

$

35,260

 

$

26,878

 

Schedule of estimated useful lives of property and equipment

 

 

 

 

    

 Useful Lives

 

 

(in years)

 

 

 

Vehicles

 

5-10

Equipment

 

5-7

Buildings

 

15

Leasehold improvements

 

5

Office equipment

 

5-7