Accounts Receivable

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Accounts Receivable

4. Accounts Receivable

	2018			2017
Accounts receivable	$	4,459,834		$	2,145,803
Allowances for doubtful accounts		(37,089	)		(40,332	)
	$	4,422,745		$	2,105,471