Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)		12 Months Ended
		Dec. 31, 2025 USD ($) segment $ / shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) $ / shares	Jun. 30, 2025	Apr. 01, 2025	Mar. 31, 2025
Concentration Risk [Line Items]
Prepaid expenses		$ (4,195,000)	$ (3,457,000)
Other current assets		$ 6,630,000	5,545,000
Number of operating segments | segment		1
Number of reportable segments | segment		1
Net loss		$ (25,612,000)	$ (48,531,000)	$ (59,713,000)
Net loss per share, basic (USD per share) | $ / shares	[1]	$ (0.46)	$ (1.11)	$ (1.66)
Net loss per share, diluted (USD per share) | $ / shares	[1]	$ (0.46)	$ (1.11)	$ (1.66)
Deferred revenue, noncurrent		$ 5,400,000	$ 5,100,000
Advertising expense		2,500,000	3,000,000.0	$ 2,600,000
Restricted cash, non-current		$ 0	$ 0	$ 4,128,000
Deferred contract cost amortization period (in years)		5 years
Revision of Prior Period, Reclassification, Adjustment
Concentration Risk [Line Items]
Prepaid expenses		$ 200,000
Other current assets		$ 200,000
Machinery and equipment
Concentration Risk [Line Items]
Useful life						6 years
Data center equipment
Concentration Risk [Line Items]
Useful life		6 years			6 years	6 years
Change in Accounting Method Accounted for as Change in Estimate
Concentration Risk [Line Items]
Net loss		$ 5,200,000
Depreciation		$ 5,200,000
Change in Accounting Method Accounted for as Change in Estimate | Machinery and equipment
Concentration Risk [Line Items]
Net loss per share, basic (USD per share) | $ / shares		$ 0.09
Net loss per share, diluted (USD per share) | $ / shares		$ 0.09
Computer Software, Intangible Asset
Concentration Risk [Line Items]
Useful life (in years)		5 years
Minimum
Concentration Risk [Line Items]
Award vesting period (in years)		1 year
Minimum | Machinery and equipment
Concentration Risk [Line Items]
Useful life							3 years
Minimum | Data center equipment
Concentration Risk [Line Items]
Useful life							3 years
Maximum
Concentration Risk [Line Items]
Award vesting period (in years)		4 years
Maximum | Machinery and equipment
Concentration Risk [Line Items]
Useful life							5 years
Maximum | Data center equipment
Concentration Risk [Line Items]
Useful life							5 years
Computer Backup
Concentration Risk [Line Items]
Contract term		1 year
Free-trial period		14 days
Computer Backup | Minimum
Concentration Risk [Line Items]
Contract term		1 month
Computer Backup | Maximum
Concentration Risk [Line Items]
Contract term		2 years
B2 Cloud Storage
Concentration Risk [Line Items]
Refund period		30 days
B2 Cloud Storage | Minimum
Concentration Risk [Line Items]
Contract term		1 year
B2 Cloud Storage | Maximum
Concentration Risk [Line Items]
Contract term		5 years

[1] (1) On July 6, 2023, all shares of the Company’s then outstanding Class B common stock were automatically converted into the same number of Class A common stock, pursuant to the terms of the Company’s Amended and Restated Certificate of Incorporation. No additional shares of Class B common stock will be issued following such conversion. See Note 13 for further details.