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REVOLVING CREDIT FACILITY (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Jul. 11, 2017
Bank of America |  |  |
Long-term debt |  |  |
Effective rate (as a percent) | 282.00% |  |
Annual commitment fee (as a percent) | 20.00% |  |
Outstanding balance | $ 13,200,000 |  |
Bank of America | LIBOR |  |  |
Long-term debt |  |  |
Margin on variable rate (as a percent) | 125.00% |  |
Bank of America | Revolving credit agreement |  |  |
Long-term debt |  |  |
Maximum borrowing capacity |  |  | $ 25,000,000.0
Wells Fargo |  |  |
Long-term debt |  |  |
Effective rate (as a percent) |  | 213.00% |
Annual commitment fee (as a percent) |  | 25.00% |
Outstanding balance |  | $ 9,900,000 |
Wells Fargo | LIBOR |  |  |
Long-term debt |  |  |
Margin on variable rate (as a percent) |  | 125.00% |

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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