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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Stock Options and Warrants (Details 2) - Employee Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of information about stock options outstanding
Number Outstanding	1,369,649	838,149	1,048,627
Weighted Average Exercise Price	$ 2.01	$ 3.08	$ 3.20
$0.00 - $5.00 [Member]
Summary of information about stock options outstanding
Range of Exercise Prices, Minimum	0.00
Range of Exercise Prices, Maximum	$ 5.00
Number Outstanding	1,224,000
Weighted Average Life	5 years 2 months 12 days
Weighted Average Exercise Price	$ 8.18
$5.01 - $20.00 [Member]
Summary of information about stock options outstanding
Range of Exercise Prices, Minimum	5.01
Range of Exercise Prices, Maximum	$ 20.00
Number Outstanding	145,000
Weighted Average Life	1 year 6 months 21 days
Weighted Average Exercise Price	$ 1.56
$0.00 - $20.00 [Member]
Summary of information about stock options outstanding
Range of Exercise Prices, Minimum	0.00
Range of Exercise Prices, Maximum	$ 20.00
Number Outstanding	1,369,649
Weighted Average Life	4 years 4 months 24 days
Weighted Average Exercise Price	$ 3.08