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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of activity related to stock options

	Number of Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding, January 1, 2021		3,815,585			$	5.56				8.9		$	342,551
Granted		1,090,000				2.05							218,950
Exercised		—				—							—
Cancelled		—				—							—
Outstanding, March 31, 2021		4,905,585			$	4.78				8.7		$	1,396,195
Exercisable, March 31, 2021		1,597,409			$	8.38				8.0		$	223,339

Schedule of activity related to restricted stock awards granted

		Number of Shares				Weighted Average Grant Date Fair Value
Nonvested, January 1, 2021			25,645			$	10.07
Granted			165,413				2.42
Vested			(120,051	)			3.33
Cancelled			—				—
Nonvested, March 31, 2021			71,007			$	4.74

Schedule of activity related to restricted stock and deferred stock units granted

		Number of Shares				Weighted Average Grant Date Fair Value
Nonvested, January 1, 2021			1,014,123			$	1.50
Granted			147,000				2.83
Vested			(15,675	)			1.83
Cancelled			—				—
Nonvested, March 31, 2021			1,145,448			$	1.67

Schedule of recognized stock compensation for equity awards

	Three months ended March 31,
	2021				2020
Selling, general and administrative	$	809,547			$	547,090
Research and development		112,986				186,599
Cost of goods sold		19,650				11,176
Total expense	$	942,183			$	744,865

Schedule of weighted average assumptions used in valuing plans

	Three months ended March 31, 2021				Three months ended March 31, 2020
Fair value at grant date	$	1.39		$	1.27
Expected volatility	79.9		%		113.4	%
Risk-free interest rate	0.6		%		1.4	%
Expected holding period, in years	6.1				6.1
Dividend yield		—	%		—	%

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year.

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