STOCKHOLDERS' EQUITY (Schedule of Warrants) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Class of Stock [Line Items]
Underlying shares (in shares)		831,635
Warrants expired		0	239
Warrants Not Assumed in Merger, Expiring June 2022, Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		2,540
Exercise price (in dollars per share)		$ 41.25
Warrants Not Assumed in Merger, Expiring June 2022, Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		500
Exercise price (in dollars per share)		$ 7.50
Warrants Not Assumed In Merger, Expiring June 2022 Group C [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		6,095
Exercise price (in dollars per share)		$ 105.00
Warrants Not Assumed in Merger, Expiring August 2022, Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		24,935
Exercise price (in dollars per share)		$ 0.40
Warrants Not Assumed in Merger, Expiring August 2022, Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		4,000
Exercise price (in dollars per share)		$ 46.88
Warrants Not Assumed in Merger, Expiring August 2022, Group C [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		47,995
Exercise price (in dollars per share)		$ 150.00
Warrants Not Assumed in Merger, Expiring August 2022, Group D [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		9,101
Exercise price (in dollars per share)		$ 7.50
Warrants Not Assumed In Merger, Expiring August 2022 Group E [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		16,664
Exercise price (in dollars per share)		$ 0.40
Warrants Not Assumed In Merger, Expiring August2022 Group F [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		7,335
Exercise price (in dollars per share)		$ 0.40
Warrants Not Assumed in Merger, Expiring October 2022 Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		666
Exercise price (in dollars per share)		$ 0.40
Warrants Not Assumed in Merger, Expiring October 2022 Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		7,207
Exercise price (in dollars per share)		$ 112.50
Warrants Not Assumed In Merger, Expiring April 2023 Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		69,964
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring April 2023 Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		78,414
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed in Merger, Expiring October 2022 Group C [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		15,466
Exercise price (in dollars per share)		$ 11.25
Warrants Not Assumed In Merger, Expiring July 2023 Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		14,671
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring July 2023 Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		14,672
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring August 2023 Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		20,903
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring August 2023 Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		20,903
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring September 2023 Group A [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		19,816
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring September 2023 Group B [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		20,903
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring November 2023 [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		75,788
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring December 2023 [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		51,282
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring April 2024 [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		147,472
Exercise price (in dollars per share)		$ 5.40
Warrants Not Assumed In Merger, Expiring May 2024 [Member]
Class of Stock [Line Items]
Underlying shares (in shares)		154,343
Exercise price (in dollars per share)		$ 9.56
2016 Warrant Liability [Member]
Class of Stock [Line Items]
Warrants outstanding (in shares)	357		357
Settlement of warrant liability	$ 0.1		$ 0.1