Stock-based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Dec. 31, 2023 $ / shares shares	Feb. 10, 2023 shares	May 31, 2023 shares	Dec. 31, 2024 USD ($) plan $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Oct. 22, 2021 shares	Mar. 11, 2021 shares
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of equity incentive plans | plan				5
Proceeds from ESPP purchase | $				$ 1,703	$ 1,174
Common Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Issuance of common stock to employees under employee stock purchase plan (in shares)				384,341	257,506
Velodyne Lidar, Inc.
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of shares reserved for issuance (in shares)	1,077,184				1,077,184
Increase in shares reserved for issuance (in shares)		820,400
2021 Incentive Award Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of shares reserved for issuance (in shares)							18,558,576
Increase in number of shares authorized, annual increase percentage							5.00%
2022 Employee Stock Purchase Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Employee stock purchase plan, maximum employee subscription rate				15.00%
Employee stock purchase plan, offering period				24 months
Employee stock purchase plan, purchase period				6 months
Employee stock purchase plan, purchase price of common stock, percent				85.00%
Shares of the company common stock per offering period (in shares)			3,000
Shares issued (in dollars per share) | $ / shares	$ 4.56			$ 4.43	$ 4.56
Proceeds from ESPP purchase | $				$ 1,700	$ 1,200
Stock Options | Sense Photonics Inc.
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation arrangement, number of shares assumed in business combination (in shares)						82,311
Stock Options | 2015 Stock Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Minimum exercise price as percentage of fair value of shares on grant date				100.00%
Award vesting period				4 years
Stock Options | 2015 Stock Plan | A Shareholder with 10% Ownership
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Option expiration period				5 years
Minimum exercise price as percentage of fair value of shares on grant date				110.00%
Shareholder ownership percentage				10.00%
Stock Options | 2015 Stock Plan | Maximum
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Option expiration period				10 years
Stock Options | 2021 Incentive Award Plan | Share-based Payment Arrangement, Tranche One
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting schedule in percentage				25.00%
Stock Options | 2021 Incentive Award Plan | Share-based Payment Arrangement, Monthly Vesting for Thirty Six Month
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting schedule in percentage	2.78%
Restricted Stock Units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
RSU, cost not yet recognized | $				$ 28,600
Unamortized stock-based compensation expense, period for recognition				1 year 6 months
Restricted Stock Units | Sense Photonics Inc.
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation arrangement, number of shares assumed in business combination (in shares)						449,098
Restricted Stock Units | Velodyne Lidar, Inc.
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation arrangement, number of shares assumed in business combination (in shares)		961,012
Restricted Stock Units | 2015 Stock Plan | Employee | Share-based Payment Arrangement, Tranche One
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting schedule in percentage				25.00%
Restricted Stock Units | 2021 Incentive Award Plan | Employee
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting period				4 years
Award vesting rights, vested percentage				100.00%
Restricted Stock Award
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
RSU, cost not yet recognized | $				$ 3,200
Unamortized stock-based compensation expense, period for recognition				8 months 12 days
Restricted Stock Award | Velodyne Lidar, Inc.
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation arrangement, number of shares assumed in business combination (in shares)		728,646
Restricted Stock Award | 2015 Stock Plan | Employee
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting rights, vested percentage				100.00%
Restricted Stock Award | 2015 Stock Plan | Employee | Share-based Payment Arrangement, Tranche One
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting schedule in percentage				25.00%
Restricted Stock Award | 2021 Incentive Award Plan | Employee
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Award vesting period				4 years