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