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INCOME TAXES - Tax Statutory Rate Reconciliation and Changes in Uncertain Income Tax Positions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Reconciliation of the tax (benefit) provision computed at the statutory rate to the effective tax rate |  |
Statutory U.S. federal income tax rate (as a percent) | 21.00% | 34.00%
State and local income taxes, net of federal income tax benefit (as a percent) | 3.20% | 3.40%
Permanent differences (as a percent) | (4.40%) | (1.20%)
Change in valuation allowance (as a percent) | (18.70%) | 446.70%
Change in uncertain tax positions (as a percent) | 0.00% | 0.50%
Other (as a percent) | (0.30%) | 0.10%
Effect of U.S. tax rate change | 0.00% | (422.60%)
Effective income tax rate (as a percent) | 0.80% | 60.90%
Changes in the uncertain income tax positions |  |
Beginning balance | $ 1 | $ 27
Tax positions related to prior years: |  |
Lapses in statutes of limitations | (1) | (26)
Total | (1) | (26)
Ending balance |  | 1
Amount of unrecognized tax benefits that would affect the effective tax rate if the tax benefits were recognized | 0 |
Penalties and Interest Accrued | $ 0 | $ 0

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