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12. Stockholders' Equity (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Number of Options Outstanding, Beginning | 37,500 |
Number of Options Granted | 50,000 |
Number of Options Exercised | (3,000) |
Number of Options Forfeited | (25,000) |
Number of Options Outstanding, Ending | 82,000 | 37,500
Number of Options Vested and Exercisable | 50,000 |
Weighted Average Exercise Price Outstanding, Beginning | $ 8.36 |
Weighted Average Exercise Price Granted | 8.72 |
Weighted Average Exercise Price Exercised | 7.85 |
Weighted Average Exercise Price Forfeited | 7.85 |
Weighted Average Exercise Price Outstanding, Ending | 8.61 | $ 8.36
Weighted Average Exercise Price Vested and Exercisable | $ 8.45 |
Weighted Average Remaining Contractual Life (in years) Outstanding Beginning | 2 years 2 months 26 days |
Weighted Average Remaining Contractual Life (in years) forfeited | 2 years 14 days |
Weighted Average Remaining Contractual Life (in years) Outstanding Ending | 3 years 4 months 17 days |
Weighted Average Remaining Contractual Life (in years) Vested and Exercisable | 2 years 1 month 13 days |
Aggregate Intrinsic Value Outstanding, Beginning | $ 349,950 |
Aggregate Intrinsic Value Granted | $ 0 |
Aggregate Intrinsic Value Exercised | $ 6,270 | $ 3,794,505
Aggregate Intrinsic Value Forfeited/canceled | $ 13,588 |
Aggregate Intrinsic Value Outstanding, Ending | $ 0 | $ 349,950
Aggregate Intrinsic Value Vested and Exercisable | $ 0 |
Restricted Stock |  |
Number of Options Outstanding, Beginning | 120,499 |
Number of Options Granted | 120,586 |
Number of Options Exercised | (15,440) |
Number of Options Forfeited | (11,716) |
Number of Options Outstanding, Ending | 213,929 | 120,499
Weighted Average Exercise Price Outstanding, Beginning | $ 17.66 |
Weighted Average Exercise Price Granted | 15.51 |
Weighted Average Exercise Price Exercised | 17.04 |
Weighted Average Exercise Price Forfeited | 15.57 |
Weighted Average Exercise Price Outstanding, Ending | $ 16.51 | $ 17.66
Aggregate Intrinsic Value Outstanding, Beginning | $ 2,129,175 |
Aggregate Intrinsic Value Granted | $ 1,870,487 |
Aggregate Intrinsic Value Exercised | $ (263,071) |
Aggregate Intrinsic Value Forfeited/canceled | $ (182,417) |
Aggregate Intrinsic Value Outstanding, Ending | $ 3,554,174 | $ 2,129,175

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition 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. + References 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 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References 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 + Details
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- Definition The combined weighted average of the accumulated differences between the fair values on underlying shares and exercises prices to acquire such shares as of the grant date on options that were either forfeited or lapsed. + References 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition 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. + References 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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