Business Combination - Schedule of Pro Forma Information, Adjustments (Details) - Velodyne - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Business Acquisition [Line Items]
Net loss	$ (175,835)	$ (104,111)
An increase in amortization expense related to the fair value of acquired identifiable intangible assets, net of the amortization expense already reflected in actual historical results
Business Acquisition [Line Items]
Net loss	(277)	(754)
A decrease (increase) in expenses related to the transaction expenses
Business Acquisition [Line Items]
Net loss	6,058	(6,058)
A net increase in revenue related to the impact of the acceleration of the Amazon Warrant vesting recognized by Velodyne at the close of the Velodyne Merger transaction
Business Acquisition [Line Items]
Net loss	3,656	0
A decrease in expenses related to the impact of the acceleration of the Amazon Warrant vesting recognized by Velodyne at the close of the Velodyne Merger transaction
Business Acquisition [Line Items]
Net loss	26,704	0
Represents decrease (increase) in additional stock-based compensation expense related to Ouster employee terminations due to change in control.
Business Acquisition [Line Items]
Net loss	6,383	(5,195)
Represents a decrease (increase) in severance expense in connection with the Velodyne Merger transaction
Business Acquisition [Line Items]
Net loss	$ 10,586	$ (10,586)