NATURE OF OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Credit Risk) (Details) |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
|
| Revenue [Member] | Outside of the US [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 72.00% | ||
| Customer A [Member] | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 25.00% | 58.00% | |
| Customer A [Member] | Revenue [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 69.00% | 56.00% | |
| Customer B [Member] | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 17.00% | 34.00% | |
| Customer B [Member] | Revenue [Member] | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 12.00% | 14.00% | |
| Customer C [Member] | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 13.00% | ||
| Customer D [Member] | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration of Credit Risk | 10.00% | ||