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STOCKHOLDERS' EQUITY (Schedule of Warrants) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 $ / shares shares | Jun. 30, 2020 $ / shares shares
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 906,769 | 906,769
Warrants expired | 832 | 2,420
Warrants Assumed in Merger, Expiring December 2020 [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 272 | 272
Exercise price (in dollars per share) | $ / shares | $ 747.00 | $ 747.00
Warrants Assumed in Merger, Expiring January 2021, Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 596 | 596
Exercise price (in dollars per share) | $ / shares | $ 544.50 | $ 544.50
Warrants outstanding (in shares) | 239 | 239
Warrants Not Assumed in Merger, Expiring June 2022, Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 2,540 | 2,540
Exercise price (in dollars per share) | $ / shares | $ 41.25 | $ 41.25
Warrants Not Assumed in Merger, Expiring June 2022, Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 500 | 500
Exercise price (in dollars per share) | $ / shares | $ 7.50 | $ 7.50
Warrants Not Assumed In Merger, Expiring June 2022 Group C [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 6,095 | 6,095
Exercise price (in dollars per share) | $ / shares | $ 105.00 | $ 105.00
Warrants Not Assumed in Merger, Expiring August 2022, Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 25,201 | 25,201
Exercise price (in dollars per share) | $ / shares | $ 0.40 | $ 0.40
Warrants Not Assumed in Merger, Expiring August 2022, Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 4,000 | 4,000
Exercise price (in dollars per share) | $ / shares | $ 46.880 | $ 46.880
Warrants Not Assumed in Merger, Expiring August 2022, Group C [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 47,995 | 47,995
Exercise price (in dollars per share) | $ / shares | $ 150.00 | $ 150.00
Warrants Not Assumed in Merger, Expiring August 2022, Group D [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 9,101 | 9,101
Exercise price (in dollars per share) | $ / shares | $ 7.50 | $ 7.50
Warrants Not Assumed In Merger, Expiring August 2022 Group E [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 16,664 | 16,664
Exercise price (in dollars per share) | $ / shares | $ 0.40 | $ 0.40
Warrants Not Assumed In Merger, Expiring August2022 Group F [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 7,335 | 7,335
Exercise price (in dollars per share) | $ / shares | $ 0.40 | $ 0.40
Warrants Not Assumed in Merger, Expiring October 2022 Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 666 | 666
Exercise price (in dollars per share) | $ / shares | $ 0.40 | $ 0.40
Warrants Not Assumed in Merger, Expiring October 2022 Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 7,207 | 7,207
Exercise price (in dollars per share) | $ / shares | $ 112.50 | $ 112.50
Warrants Not Assumed In Merger, Expiring April 2023 Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 69,964 | 69,964
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring April 2023 Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 121,552 | 121,552
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed in Merger, Expiring October 2022 Group C [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 15,466 | 15,466
Exercise price (in dollars per share) | $ / shares | $ 11.25 | $ 11.25
Warrants Not Assumed In Merger, Expiring July 2023 Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 14,671 | 14,671
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring July 2023 Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 14,672 | 14,672
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring August 2023 Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 36,334 | 36,334
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring August 2023 Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 36,334 | 36,334
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring September 2023 Group A [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 19,816 | 19,816
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring September 2023 Group B [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 20,903 | 20,903
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring November 2023 [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 75,788 | 75,788
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring December 2023 [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 51,282 | 51,282
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring April 2024 [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 147,472 | 147,472
Exercise price (in dollars per share) | $ / shares | $ 5.40 | $ 5.40
Warrants Not Assumed In Merger, Expiring May 2024 [Member] |  |
Class of Stock [Line Items] |  |
Underlying shares (in shares) | 154,343 | 154,343
Exercise price (in dollars per share) | $ / shares | $ 9.56 | $ 9.56
2016 Warrant Liability [Member] |  |
Class of Stock [Line Items] |  |
Warrants outstanding (in shares) | 357 | 357

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