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12. STOCK-BASED COMPENSATION (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation [Abstract] |  |
Number of Option and Warrants Outstanding, Beginning balance | 808,500 | 185,000
Number of Option and Warrants Outstanding, Granted | 1,777,000 | 661,000
Number of Option and Warrants expired | (67,500) | (37,500)
Number of Option and Warrants Outstanding, Ending Balance | 2,518,000 | 808,500
Weighted- Average Exercise price of Option and Warrants, outstanding beginning of period | $ 1.61 | $ 2.19
Weighted- Average Exercise price of Option and Warrants, granted in period | 0.71 | 1.47
Weighted- Average Exercise price of Option and Warrants, expired in period | 1.96 | 2.18
Weighted- Average Exercise price of Option and Warrants, outstanding end of period | $ 0.97 | $ 1.61
Range of Exercise Price per Common Share, Beginning Balance | $1.44 - $4.80 | $1.54 - $4.80
Range of Exercise Price per Common Share, Granted and Vested | $0.71 | $1.44 - $1.98
Range of Exercise Price per Common Share, Expired | $1.71-$2.55 | $1.83-$2.55
Range of Exercise Price per Common Share, Ending Balance | $0.71 - $4.80 | $1.44 - $4.80

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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 Net number of share options (or share units) granted during the period. + 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)(1) -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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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance 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)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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