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Equity (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Schedule of stock option activity

(in thousands, except for per-share amount)		Number of Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value
Outstanding, January 1, 2019			241				52.20				7.97				6,400
Granted			195				8.10
Cancelled			(56	)			14.40
Outstanding, December 31, 2019			380				35.10				7.88				155
Granted			458				9.99
Cancelled			(23	)			16.84
Outstanding, December 31, 2020			815				21.53				8.51				120
Exercisable, December 31, 2020			254				45.98				6.74				41

Schedule of pre-funded warrant activity

(in thousands, except for per-share amounts)		Number of Shares				Weighted Average Exercise Price				Aggregate Intrinsic Value
Outstanding, December 31, 2019			-			$	-			$	-
Granted			3,459				0.003
Exercised			(3,459	)			0.003
Outstanding, December 31, 2020			-			$	-			$	-

Schedule of warrant activities

(in thousands, except for per-share amounts)		Number of Warrants				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value
Outstanding, January 1, 2019			1,861				36.00				2.04				569
Granted			1,430				15.00
Exercised			(85	)			17.70
Cancelled			(335	)			82.80
Outstanding, December 31, 2019			2,871				20.71				2.95				301
Granted			-				-
Exercised			(2	)			15.00
Cancelled			(756	)			20.99
Outstanding, December 31, 2020			2,113				20.55				2.76				362
Exercisable, December 31, 2020			2,111				20.56				2.76				362

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775

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