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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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ASU 2016-09 [Member] |  |
Summary of Adjustments to Conform to New Guidance [Abstract] |  |
Cumulative effect adjustment |  | $ 0
ASU 2016-09 [Member] | Retained Earnings [Member] |  |
Summary of Adjustments to Conform to New Guidance [Abstract] |  |
Cumulative effect adjustment |  | 1,696
ASU 2016-09 [Member] | Additional Paid-in Capital [Member] |  |
Summary of Adjustments to Conform to New Guidance [Abstract] |  |
Cumulative effect adjustment |  | (1,696)
ASU 2015-03 [Member] |  |
Summary of Adjustments to Conform to New Guidance [Abstract] |  |
Deferred financing costs | $ 2,300 | $ 2,600
ASU 2014-09 [Member] | Retained Earnings [Member] | Plan [Member] |  |
Summary of Adjustments to Conform to New Guidance [Abstract] |  |
Cumulative effect adjustment | $ 2,800 |

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