Summary of Significant Accounting Policies (Narrative) (Details)		12 Months Ended
	Aug. 11, 2025 USD ($) shares	Dec. 31, 2025 USD ($) customer segment	Dec. 31, 2024 USD ($) customer	Dec. 31, 2023 USD ($) customer	Mar. 31, 2025 USD ($)	Mar. 26, 2025 USD ($)	Jan. 31, 2025 USD ($)	Jun. 14, 2024 USD ($)
Accounting Policies [Line Items]
Non-cash interest charges				$ 144,000
Number of reportable segments | segment		1
Number of operating segments | segment		1
Available for sale securities, credit loss expense		$ 0
Investments			$ 0
Common stock warrant liability		0	20,835,000
Derivative liability	$ 24,600,000	0				$ 20,800,000	$ 11,100,000	$ 1,100,000
Impairment of long-lived assets		0	0	0
Debt conversion, converted instrument, amount		94,139,000
Debt conversion, derivative liability reclassified to additional paid in capital	24,600,000
Debt conversion, debt issuance costs reclassified to additional paid in capital	$ 28,800,000
Deferred offering costs		$ 0	413,000
Preferred stock, aggregate dividends				1,239,000
Revenue, customer contract period (in days)		30 days
Advertising expense		$ 2,000,000.0	1,500,000	778,000
Foreign exchange transaction (losses)		(216,000)	(269,000)	(172,000)
Foreign currency translation gain (loss)		$ 191,000	$ (271,000)	$ (504,000)
Conversion of redeemable convertible preferred stock to common stock upon IPO (in shares) | shares	51,226,348
2025 Convertible Notes [Member]
Accounting Policies [Line Items]
Derivative liability					$ 20,800,000		$ 11,100,000
Debt conversion, converted instrument, amount	$ 98,300,000
Conversion of redeemable convertible preferred stock to common stock upon IPO (in shares) | shares	6,470,743
Common Stock [Member]
Accounting Policies [Line Items]
Debt conversion, shares issued | shares	6,470,743
Conversion of redeemable convertible preferred stock to common stock upon IPO (in shares) | shares	51,226,348
Stock Options [Member]
Accounting Policies [Line Items]
Applicable service period (in years)		4 years
Implementation and Onboarding Costs [Member]
Accounting Policies [Line Items]
Capitalized contract cost, amortization period (in years)		2 years
New Site Commission Costs [Member]
Accounting Policies [Line Items]
Capitalized contract cost, amortization period (in years)		3 years
No Customer [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Accounting Policies [Line Items]
Number of major customers | customer		0	0	0
No Customer [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Accounting Policies [Line Items]
Number of major customers | customer		0	0
Minimum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life		2 years
Maximum [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Capitalized Internal-Use Software [Member]
Accounting Policies [Line Items]
Property, plant and equipment, useful life		2 years