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7. ACCRUED EXPENSES (Details) - USD ($) | Mar. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Payables and Accruals [Abstract] |  |  |
Accrued vacation | $ 146,622 | $ 152,051 | $ 136,410
Accrued interest | 162,783 | 175,953 | 235,776
Accrued loan guaranty |  | 0 | 8,333
Accured rent | 76,332 | 77,164 | 26,091
Accrued commissions |  | 0 | 18,828
Accrued loss contingency |  | 44,423 | 0
Other accrued expense | 51,038 | 2,333 | 4,995
Total accrued expenses | $ 436,775 | $ 451,924 | $ 430,433

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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