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12. STOCK-BASED COMPENSATION (Details) | 6 Months Ended
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Jun. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Option and Warrants Outstanding, Beginning balance | shares | 808,500
Number of Option and Warrants Granted and Vested | shares | 0
Number of Option and Warrants Expired | shares | (25,000)
Number of Option and Warrants Outstanding, Ending Balance | shares | 783,500
Weighted- Average Exercise price of Option and Warrants, Beginning balance | $ / shares | $ 1.61
Weighted- Average Exercise price of Option and Warrants, Granted and vested during the period | $ / shares | 0.00
Weighted- Average Exercise price of Option and Warrants, Expired | $ / shares | 2.31
Weighted- Average Exercise price of Option and Warrants, Ending Balance | $ / shares | $ 1.58
Range of Exercise Price per Common Share, Granted and Vested | 0.00
Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Price per Common Share, Beginning Balance | 1.44
Range of Exercise Price per Common Share, Expired | 2.07
Range of Exercise Price per Common Share, Ending Balance | 1.44
Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Price per Common Share, Beginning Balance | 4.80
Range of Exercise Price per Common Share, Expired | 2.55
Range of Exercise Price per Common Share, Ending Balance | 4.80

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- Definition For presentations that combine terminations, 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 or that expired. + 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)-(4) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + 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)-(4) -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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