Ekso Bionics Holdings, Inc. Quarterly report pursuant to Section 13 or 15(d)

Capitalization and Equity Structure - Warrants (Details)

Capitalization and Equity Structure - Warrants (Details) - $ / shares shares in Thousands	1 Months Ended		9 Months Ended
	Jun. 30, 2019	Dec. 31, 2015	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			1,178
Warrants issued (in shares)			996
Exercised (in shares)			(723)
Expired (in shares)			(19)
Ending balance (in shares)			1,432
June 2020 Investor Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 5.18
Term (Years)			5 years 6 months
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			0
Warrants issued (in shares)			874
Exercised (in shares)			(477)
Expired (in shares)			0
Ending balance (in shares)			397
June 2020 Placement Agent Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 5.64	$ 5.64
Term (Years)			5 years
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			0
Warrants issued (in shares)	122		122
Exercised (in shares)			0
Expired (in shares)			0
Ending balance (in shares)			122
December 2019 Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 8.10
Term (Years)			5 years
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			556
Warrants issued (in shares)			0
Exercised (in shares)			0
Expired (in shares)			0
Ending balance (in shares)			556
December 2019 Placement Agent Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 8.44
Term (Years)			5 years
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			52
Warrants issued (in shares)			0
Exercised (in shares)			0
Expired (in shares)			0
Ending balance (in shares)			52
May 2019 Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 3.52
Term (Years)			5 years
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)	444		444
Warrants issued (in shares)			0
Exercised (in shares)			(246)
Expired (in shares)			0
Ending balance (in shares)			198
2017 Information Agent Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 22.50
Term (Years)			3 years
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			13
Warrants issued (in shares)			0
Exercised (in shares)			0
Expired (in shares)			(13)
Ending balance (in shares)			0
2015 Warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 41.25		$ 56.10
Term (Years)			5 years
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			107
Warrants issued (in shares)		141	0
Exercised (in shares)			0
Expired (in shares)			0
Ending balance (in shares)			107
Pre-2014 warrants
Schedule of Capitalization, Equity [Line Items]
Exercise price (in dollars per share)			$ 144.90
Class Of Warrant Or Right, Outstanding [Roll Forward]
Beginning balance (in shares)			6
Warrants issued (in shares)			0
Exercised (in shares)			0
Expired (in shares)			(6)
Ending balance (in shares)			0
Pre-2014 warrants \| Minimum
Schedule of Capitalization, Equity [Line Items]
Term (Years)			9 years
Pre-2014 warrants \| Maximum
Schedule of Capitalization, Equity [Line Items]
Term (Years)			10 years