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RETIREMENT SAVINGS PLAN (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items] |  |
Discretionary employer contributions (as a percent) | 50.00% |
Maximum discretionary employer contribution | $ 500 |
Matching contribution expense | $ 5,000 | $ 5,000
Minimum |  |
Defined Contribution Plan Disclosure [Line Items] |  |
Base pay that can be contributed by employees through salary deferrals (as a percent) | 1.00% |
Maximum |  |
Defined Contribution Plan Disclosure [Line Items] |  |
Base pay that can be contributed by employees through salary deferrals (as a percent) | 60.00% |

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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