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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 02, 2019 | Jan. 02, 2019 | Mar. 21, 2018 | Mar. 31, 2019 | Dec. 31, 2018
Loss Contingencies [Line Items] |  |  |  |  |
Interest rate (as a percent) |  | 8.00% |  |  |
Accounts Payable |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Other Commitment |  |  |  | $ 1,300,000 | $ 1,500,000
Settlement Agreements |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Repayments of debt to service provider |  | $ 600,000 |  | 200,000 |
Outstanding debt |  | 1,500,000 |  |  |
(Gain) loss on extinguishment of debt |  | $ 900,000 |  |  |
XIFIN, Inc. |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingency, damages sought |  |  |  | 270,000 |
Loss contingency accrual |  |  |  | 100,000 |
CPA Global |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingency, damages sought |  |  |  | 200,000 |
Loss contingency accrual |  |  |  | $ 100,000 | $ 100,000
Bio-Rad Laboratories |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Litigation settlement in favor of other party, amount |  |  | $ 39,000 |  |
Loss Contingency Accrual, Payments |  |  | $ 39,000 |  |
Bio-Rad Laboratories | Subsequent Events |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency Accrual, Payments | $ 0 |  |  |  |
Damages paid | $ 39,000 |  |  |  |

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