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Stockholders' Equity - Schedule of Non-qualified Stock Options (Details) - Non-Qualified Stock Option [Member] - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Number of Stock Options, Options outstanding, beginning of year | 279,167 | 531,667
Number of Stock Options, Granted |  |
Number of Stock Options, Redeemed | (34,225) | (220,523)
Number of Stock Options, Exercised | (10,775) | (10,700)
Number of Stock Options, Expired / terminated |  | (21,277)
Number of Stock Options, Options outstanding, end of year | 234,167 | 279,167
Number of Stock Options, Options exercisable, end of year | 234,167 | 279,167
Weighted Exercise Price, Option outstanding, beginning of year | $ 2.34 | $ 1.85
Weighted Exercise Price, Granted |  |
Weighted Exercise Price, Redeemed | 1.13 | 1.30
Weighted Exercise Price, Exercised | 1.06 | 1.40
Weighted Exercise Price, Expired / terminated |  | 1.40
Weighted Exercise Price, Option outstanding end of year | 2.47 | 2.34
Weighted Exercise Price, Options exercisable, end of year | $ 2.47 | $ 2.34

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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