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Restricted Stock, Stock Options and Other Stock Plans (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Assumptions Used to Calculate Fair Value of Options | The following table summarizes the assumptions used to calculate the fair value of options during 2019 and 2018.
|  | 2019 |  |  | 2018 |
Weighted average fair value of options granted |  | $ | 1.65 |  |  | $ | 1.80 |
Dividend yields |  |  | — |  |  |  | — |
Expected volatility |  | 82.03%-82.32% |  |  | 72.21%-83.47% |
Weighted average expected volatility |  | 82.27% |  |  | 81.76% |
Weighted average risk-free interest rates |  | 2.15% |  |  | 2.74% |
Weighted average expected term (in years) |  |  | 8 |  |  |  | 6 |
Summary Information about Stock Option Activity | The following table summarizes information about stock option activity:
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted-Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2018 |  |  | 436 |  |  | $ | 3.25 |  |  | $ | 8.50 |  |  |  | - |
Granted |  |  | 84 |  |  |  | 2.90 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited or Expired |  |  | (102 | ) |  |  | 2.28 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2018 |  |  | 418 |  |  | $ | 3.42 |  |  |  | 7.67 |  |  |  | 9 |
Granted |  |  | 104 |  |  |  | 1.89 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited or Expired |  |  | (7 | ) |  |  | 12.01 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 515 |  |  | $ | 2.96 |  |  |  | 7.24 |  |  | $ | 60 |
Exercisable at December 31, 2019 |  |  | 221 |  |  | $ | 4.09 |  |  |  | 4.46 |  |  | $ | 22 |
Summary of Company's Restricted Share Activity | A summary of the Company’s restricted share activity is presented below:
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Restricted nonvested at January 1, 2018 |  |  | 243 |  |  | $ | 2.16 |
Granted |  |  | - |  |  |  | - |
Vested |  |  | (68 | ) |  |  | 2.13 |
Forfeited or Expired |  |  | (37 | ) |  |  | 2.11 |
Outstanding at December 31, 2018 |  |  | 138 |  |  | $ | 2.18 |
Granted |  |  | 254 |  |  |  | 2.33 |
Vested |  |  | (46 | ) |  |  | 2.18 |
Forfeited or Expired |  |  | — |  |  |  | — |
Nonvested at December 31, 2019 |  |  | 346 |  |  | $ | 2.29 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + 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=116856206&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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