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				2 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended
	Jun. 08, 2020	Oct. 29, 2020 USD ($) $ / shares	Jun. 30, 2020 shares	Dec. 31, 2019 $ / shares shares	May 30, 2019	Feb. 28, 2021 USD ($) $ / shares shares	Sep. 30, 2022 $ / shares shares	Sep. 30, 2021 shares	Mar. 31, 2021 shares	Jun. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2021 shares	Dec. 31, 2020 $ / shares	May 31, 2019 $ / shares shares
Class of Stock [Line Items]
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)							13,127,000				13,127,000		12,693,000
Common stock, shares issued (in shares)							13,127,000				13,127,000		12,693,000
Preferred stock, shares issued (in shares)							0				0		0
Preferred stock, shares outstanding (in shares)							0				0		0
Proceeds from direct offering \| $											$ 0	$ 37,295
Number warrants called (in shares)							1,240,000				1,240,000		1,240,000
Value of shares sold \| $											$ 0	$ 1,417
Warrants issued (in shares)											0
Exercised (in shares)											0
Common stock
Class of Stock [Line Items]
Warrants exercised (in shares)											0	358,000
Exercise of warrants (in shares)									300,000
At-the-market offering
Class of Stock [Line Items]
Number warrants called (in shares)							0	0		78,000	0
Sale of shares (in dollars per share) \| $ / shares		$ 6.75								$ 10.72
Value of shares sold \| $		$ 7,500								$ 791
At-the-market offering \| Common stock
Class of Stock [Line Items]
Available for future offerings \| $											$ 6,668
February 2021 Offering
Class of Stock [Line Items]
Percentage of warrants issued to purchase shares of common stock						7.00%
Exercise price (in dollars per share) \| $ / shares						$ 12.81
February 2021 Offering \| Underwriting agreement
Class of Stock [Line Items]
Number warrants called (in shares)						3,902,000
Sale of shares (in dollars per share) \| $ / shares						$ 10.25
Value of shares sold \| $						$ 40,000
Proceeds from direct offering \| $						$ 36,504
Expected term						5 years
2021 Warrants
Class of Stock [Line Items]
Number warrants called (in shares)						273,000	273,000				273,000
Exercise price (in dollars per share) \| $ / shares						$ 12.81	$ 12.81				$ 12.81
Warrants issued (in shares)						273,000					0
Class of warrant or right expiration period						5 years					5 years
Exercised (in shares)											0
Duration of put option						30 days
Put option pay period						5 days
June 2020 Investor Warrants
Class of Stock [Line Items]
Number warrants called (in shares)			874,000				127,000				127,000		127,000
Exercise price (in dollars per share) \| $ / shares							$ 5.18				$ 5.18			$ 5.18
Warrants issued (in shares)											0
Reverse stock split											0.067
Class of warrant or right expiration period											5 years 6 months
Exercised (in shares)											0	270,000
Duration of put option			30 days
June 2020 Placement Agent Warrants
Class of Stock [Line Items]
Number warrants called (in shares)							39,000				39,000		39,000
Exercise price (in dollars per share) \| $ / shares														5.64
Warrants issued (in shares)			122,000								0
Class of warrant or right expiration period											5 years
Exercised (in shares)											0	83,000
December 2019 Warrants
Class of Stock [Line Items]
Number warrants called (in shares)				556,000			556,000				556,000		556,000
Exercise price (in dollars per share) \| $ / shares				$ 8.10			$ 8.10				$ 8.10
Warrants issued (in shares)											0
Class of warrant or right expiration period				5 years							5 years
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]
Number warrants called (in shares)				52,000			52,000				52,000		52,000
Exercise price (in dollars per share) \| $ / shares				$ 8.44			$ 8.44				$ 8.44
Warrants issued (in shares)											0
Class of warrant or right expiration period											5 years
Exercised (in shares)											0
May 2019 Warrants
Class of Stock [Line Items]
Number warrants called (in shares)							193,000				193,000		193,000		444,000
Exercise price (in dollars per share) \| $ / shares							$ 3.52				$ 3.52			3.52	$ 3.52
Warrants issued (in shares)											0
Class of warrant or right expiration period											5 years
Exercised (in shares)											0	5,000
Duration of put option					90 days
Put option pay period	5 days
May 2019 Warrants \| Direct offering \| Common stock
Class of Stock [Line Items]
Sale of shares (in dollars per share) \| $ / shares														4.51
June 2020 Warrants
Class of Stock [Line Items]
Exercise price (in dollars per share) \| $ / shares														$ 5.18
Class of warrant or right expiration period											5 years 6 months