Stock-Based Compensation (Details 3) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Number of awards
Balance, beginning	434,451	266,585
Granted	10,000	183,750
Expired/Forfeited	(7,325)	(15,884)
Balance, ending	437,126	434,451
Weighted avg. exercise price per share
Balance, beginning	$ 1.49	$ 1.23
Granted	1.71	1.91
Expired/Forfeited	1.86	1.85
Balance, ending	1.46	1.49
Weighted avg. grant date fair value per share
Balance, beginning	1.47	1.22
Granted	1.53	1.85
Expired/Forfeited	1.83	1.83
Balance, ending	$ 1.49	$ 1.47
Weighted avg. remaining contractual life (in years)
Balance, beginning	6 years 10 months 28 days	6 years 22 days
Granted	9 years 9 months 18 days	9 years 8 months 5 days
Expired/Forfeited	7 years 6 months 18 days	7 years 10 months 10 days
Balance, ending	5 years 11 months 19 days	6 years 10 months 28 days
Aggregate intrinsic value
Balance, beginning	$ 230,039	$ 462,508
Balance, ending	150,417	$ 230,039
Exercisable, ending	310,728
Unvested, ending	$ 126,398

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901