Ekso Bionics Holdings, Inc. Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Deferred revenue	$ 2,597	$ 1,919
Non-cancellable backlog	1,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation, amount	$ 1,033
Disaggregation of Revenue [Line Items]
Remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation, amount	$ 738
Disaggregation of Revenue [Line Items]
Remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation, amount	$ 764
Disaggregation of Revenue [Line Items]
Remaining performance obligation, period