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

Quarterly report pursuant to Section 13 or 15(d)

Capitalization and Equity Structure - Additional Information (Details)

Capitalization and Equity Structure - Additional Information (Details) $ / shares in Units, $ in Thousands		1 Months Ended				3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 24, 2020	Oct. 29, 2020 USD ($) $ / shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2019 shares	Dec. 31, 2015 shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($)	Dec. 31, 2019 $ / shares shares	May 31, 2019 shares	Sep. 30, 2017 shares
Class of Stock [Line Items]
Reverse stock split	0.067
Common stock, shares authorized (in shares)						141,429,000		141,429,000		141,429,000
Preferred stock, shares authorized (in shares)						10,000,000		10,000,000		10,000,000
Common stock, shares outstanding (in shares)						8,316,000		8,316,000		5,795,000
Common stock, shares issued (in shares)						8,316,000		8,316,000		5,795,000
Preferred stock, shares outstanding (in shares)						0		0		0
Preferred stock, shares issued (in shares)						0		0		0
Warrants issued (in shares)								996,000
Warrant expenses \| $						$ 0	$ 0	$ 329	$ 706
Class of warrant or right, outstanding						1,432,000		1,432,000		1,178,000
Exercised (in shares)								723,000
Loss on modification of warrants \| $						$ 0	$ 0	$ 0	$ 257
June 2020 Warrants
Class of Stock [Line Items]
Class of warrant or right expiration period								5 years 6 months
June 2020 Investor Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 5.18		$ 5.18
Warrants issued (in shares)								874,000
Class of warrant or right expiration period								5 years 6 months
Class of warrant or right, outstanding						397,000		397,000		0
Exercised (in shares)								477,000
June 2020 Placement Agent Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares			$ 5.64			$ 5.64		$ 5.64
Class of warrant or right cash fee percentage			7.00%
Class of warrant or right cash fee \| $			$ 552
Class of warrant or right management fee percentage			1.00%
Class of warrant or right management fee \| $			$ 79
Percentage of warrants issued to purchase shares of common stock			7.00%
Warrants issued (in shares)				122,000				122,000
Class of warrant or right expiration period								5 years
Warrant expenses \| $			$ 98
Issuance costs \| $			808
Fair value of warrants \| $						$ 309		$ 309
Class of warrant or right, outstanding						122,000		122,000		0
Exercised (in shares)								0
December 2019 Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 8.10		$ 8.10
Warrants issued (in shares)								0
Class of warrant or right expiration period								5 years
Class of warrant or right, outstanding						556,000		556,000		556,000
Exercisable period								6 months 1 day
Exercised (in shares)								0
Duration of put option								30 days
Put option pay period								5 days
December 2019 Placement Agent Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 8.44		$ 8.44
Warrants issued (in shares)								0
Class of warrant or right expiration period								5 years
Class of warrant or right, outstanding						52,000		52,000		52,000
Exercised (in shares)								0
May 2019 Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 3.52		$ 3.52
Warrants issued (in shares)								0
Class of warrant or right expiration period								5 years
Class of warrant or right, outstanding						198,000		198,000		444,000	444,000
Exercised (in shares)								246,000
2017 Information Agent Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 22.50		$ 22.50
Warrants issued (in shares)								0
Class of warrant or right expiration period								3 years
Class of warrant or right, outstanding						0		0		13,000		13,000
Exercised (in shares)								0
2015 Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 41.25		$ 41.25		$ 56.10
Warrants issued (in shares)					141,000			0
Class of warrant or right expiration period								5 years
Class of warrant or right, outstanding						107,000		107,000		107,000
Exercised (in shares)								0
Warrants exercised (in shares)								0		35,000
Pre-2014 warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares						$ 144.90		$ 144.90
Warrants issued (in shares)								0
Class of warrant or right, outstanding						0		0		6,000
Exercised (in shares)								0
Direct offering
Class of Stock [Line Items]
Aggregate proceeds \| $			7,890
Issuance costs \| $			1,117
Direct offering \| June 2020 Warrants
Class of Stock [Line Items]
Aggregate proceeds \| $			2,650
Issuance costs \| $			$ 329
ATM offering \| Subsequent event
Class of Stock [Line Items]
Aggregate offering price \| $		$ 7,500
Sale of shares (in dollars per share) \| $ / shares		$ 6.75
Common stock \| Direct offering
Class of Stock [Line Items]
Number of shares sold (in shares)			1,748,000
Aggregate proceeds \| $			$ 5,240
Issuance costs \| $			$ 479
Sale of shares (in dollars per share) \| $ / shares						$ 4.51		$ 4.51
Common stock \| Direct offering \| June 2020 Investor Warrants
Class of Stock [Line Items]
Number warrants called (in shares)						874,000		874,000