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STOCK BASED COMPENSATION (Schedule of Stock Option and Warrant Outstanding and Exercisable) (Details) - Non Qualified Stock Options And Warrants [Member] - $ / shares | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Number of Shares |  |  |
Outstanding | 18,964,867 | 18,629,867 | 18,101,367
Granted | 1,122,500 | 720,000 | 1,770,000
Expired | (3,838,600) | (100,000) | (772,500)
Forfeited | (151,250) | (85,000) |
Exercised |  | (200,000) | (469,000)
Outstanding | 16,097,517 | 18,964,867 | 18,629,867
Exercisable | 15,190,336 | 18,504,240 |
Exercise Price |  |  |
Outstanding (Lower Limit) | $ 0.57 | $ 0.57 | $ 0.57
Outstanding (Upper Limit) | 1.69 | 1.69 | 1.69
Granted (Lower Limit) | 0.64 | 1.07 | 0.60
Granted (Upper Limit) | 1.05 | 1.27 | 1.50
Expired (Lower Limit) | 0.95 | 0.90 | 0.68
Expired (Upper Limit) | 1.25 | 0.90 | 1.69
Forfeited (Lower Limit) | 0.77 | 0.92 |
Forfeited (Upper Limit) | 1.50 | 1.22 |
Exercised (Lower Limit) |  | 0.615 | 1.00
Exercised (Upper Limit) |  | 1.00 | 1.25
Outstanding (Lower Limit) | 0.57 | 0.57 | 0.57
Outstanding (Upper Limit) | 1.69 | 1.69 | 1.69
Exercisable (Lower Limit) | 0.57 | 0.57 |
Exercisable (Upper Limit) | 1.69 | 1.69 |
Weighted Average Exercise Price |  |  |
Outstanding | 0.91 | 0.90 | 0.90
Granted | 0.83 | 1.19 | 0.97
Expired | 1.13 | 0.90 | 0.98
Forfeited | 0.91 | 0.96 |
Exercised |  | 0.81 | 1.07
Outstanding | 0.85 | 0.91 | $ 0.90
Exercisable | $ 0.85 | $ 0.90 |

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- Definition The floor of a customized range of exercise prices at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
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- Definition The floor of a customized range of exercise prices at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. + References No definition available. + Details
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- Definition The ceiling of a customized range of exercise prices at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. + References No definition available. + Details
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- Definition The floor of a customized range of exercise prices (per share amount) at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
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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=109197908&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=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + 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) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 -URI http://asc.fasb.org/extlink&oid=109197908&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 (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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