Accounts Receivable

9 Months Ended

Sep. 30, 2019

Receivables [Abstract]

Accounts Receivable

4. Accounts Receivable.

	September 30, 2019			December 31, 2018
Accounts receivable	$	4,890,070		$	4,459,833
Allowances for doubtful accounts		(269,903	)		(37,088	)
	$	4,620,167		$	4,422,745