Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Schedule of Revenue Disaggregated by Type

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Systems	$	-	$	310,751	$	58,051	$	328,026
Disposables, service and accessories		6,546,115		7,240,650		13,256,873		14,195,008
Sublease		251,996		-		493,061		-
Total revenue	$	6,798,111	$	7,551,401	$	13,807,985	$	14,523,034

Summary of Contract Assets and Liabilities

The following information summarizes the Company’s contract assets and liabilities:

	June 30, 2019			December 31, 2018
Contract Assets - Unbilled Receivables	$	208,023		$	251,867
Customer deposits		371,000			487,086
Product shipped, revenue deferred		645,199			645,199
Deferred service and license fees		6,030,561			5,100,402
Total deferred revenue		7,046,760			6,232,687
Less: Long-term deferred revenue		(508,772	)		(407,151	)
Total current deferred revenue	$	6,537,988		$	5,825,536

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted EPS:

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Net income (loss)	$	(1,427,718	)	$	(632,205	)	$	(3,550,538	)	$	803,025
Cumulative dividend on convertible preferred stock		(357,194	)		(357,518	)		(710,704	)		(711,107	)
Net loss attributable to convertible preferred stock		-			-			-			(42,936	)
Net income (loss) attributable to common stockholders	$	(1,784,912	)	$	(989,723	)	$	(4,261,242	)	$	48,982
Shares used for basic EPS-weighted average shares		60,052,673			58,926,545			59,936,606			45,019,358
Restricted stock units		-			-			-			267,936
Warrants		-			-			-			441,438
Weighted average number of common shares and equivalents:		60,052,673			58,926,545			59,936,606			45,728,732
Basic EPS	$	(0.03	)	$	(0.02	)	$	(0.07	)	$	0.00
Diluted EPS	$	(0.03	)	$	(0.02	)	$	(0.07	)	$	0.00