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Capital Stock, Stock Plans and Stock Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Options Valuation Assumptions | Schedule of Stock Options Valuation Assumptions
|  |  | Outside Director Stock Options Granted |
|  |  | May 4, 2021 |
Weighted-average fair value per option |  | $ | 4.97 |
Risk -free interest rate (1) |  |  | 1.61 | %
Expected volatility of stock (2) |  |  | 55.91 | %
Dividend yield |  |  | None |
Expected option life (3) |  |  | 10.0 years |
(1) | The risk-free interest rate is based on the U.S. Treasury yield in effect at the grant date over the expected term of the option.
(2) | The expected volatility is based on historical volatility from our traded Common Stock over the expected term of the option.
(3) | The expected option life is based on historical exercises and post-vesting data.
Schedule of Share-based Compensation, Allocation of Recognized Period Costs | The following table summarizes stock-based compensation recognized for the three and six months ended June 30, 2021 and 2020 for our employee and director stock options. Schedule of Share-based Compensation, Allocation of Recognized Period Costs
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
|  | Three Months Ended |  |  | Six Months Ended |
Stock Options |  | June 30, |  |  | June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Employee Stock Options |  | $ | 33,000 |  |  | $ | 33,000 |  |  | $ | 66,000 |  |  | $ | 65,000 |
Director Stock Options |  |  | 9,000 |  |  |  | 15,000 |  |  |  | 21,000 |  |  |  | 27,000 |
Total |  | $ | 42,000 |  |  | $ | 48,000 |  |  | $ | 87,000 |  |  | $ | 92,000 |
Stock-based compensation |  | $ | 42,000 |  |  | $ | 48,000 |  |  | $ | 87,000 |  |  | $ | 92,000 |
Schedule of Stock Options Roll Forward | The summary of the Company’s total Stock Option Plans as of June 30, 2021 and June 30, 2020, and changes during the periods then ended, are presented below. The Company’s Plans consist of the 2010 Stock Option Plan, the 2017 Plans and the 2003 Plan: Schedule of Stock Options Roll Forward
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value (4) |
Options outstanding January 1, 2021 |  |  | 658,400 |  |  | $ | 3.87 |  |  |  |  |  |  |  |  |
Granted |  |  | 6,000 |  |  | $ | 7.50 |  |  |  |  |  |  |  |  |
Exercised |  |  | (500 | ) |  | $ | 3.15 |  |  |  |  |  |  | $ | 2,175 |
Forfeited/expired |  |  | (1,500 | ) |  | $ | 3.15 |  |  |  |  |  |  |  |  |
Options outstanding end of period (1) |  |  | 662,400 |  |  | $ | 3.90 |  |  |  | 3.1 |  |  | $ | 2,153,595 |
Options exercisable at June 30, 2021(2) |  |  | 391,900 |  |  | $ | 4.08 |  |  |  | 3.1 |  |  | $ | 1,202,495 |
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value (4) |
Options outstanding January 1, 2020 |  |  | 681,300 |  |  | $ | 3.84 |  |  |  |  |  |  |  |  |
Granted |  |  | 6,000 |  |  | $ | 7.00 |  |  |  |  |  |  |  | 16,060 |
Exercised |  |  | (12,500 | ) |  | $ | 3.47 |  |  |  |  |  |  |  |  |
Forfeited/expired |  |  | (20,000 | ) |  | $ | 3.45 |  |  |  |  |  |  |  |  |
Options outstanding end of period (3) |  |  | 654,800 |  |  | $ | 3.88 |  |  |  | 3.7 |  |  | $ | 1,685,031 |
Options exercisable as of June 30, 2020(3) |  |  | 306,800 |  |  | $ | 4.20 |  |  |  | 3.6 |  |  | $ | 711,306 |
(1) | Options with exercise prices ranging from $2.79 to $7.50
(2) | Options with exercise prices ranging from $2.79 to $7.29
(3) | Options with exercise prices ranging from $2.79 to $8.40
(4) | The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price.

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- Definition 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. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition 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. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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