Redeemable Convertible Preferred Stock (Schedule of Temporary Equity) (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Temporary Equity [Line Items]
Number of Shares Authorized	0	122,231,454
Number of Shares Issued	0	122,231,454
Number of Shares Outstanding	0	122,231,454
Carrying Value		$ 768,566,000
Liquidation Value	$ 0	$ 951,917,000
Series A [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		4,082,965
Number of Shares Issued		4,082,965
Number of Shares Outstanding		4,082,965
Carrying Value		$ 2,041,000
Liquidation Value		$ 2,041,000
Series B-1 [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		1,954,846
Number of Shares Issued		1,954,846
Number of Shares Outstanding		1,954,846
Carrying Value		$ 6,940,000
Liquidation Value		$ 6,940,000
Series B-2 [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		2,848,263
Number of Shares Issued		2,848,263
Number of Shares Outstanding		2,848,263
Carrying Value		$ 10,111,000
Liquidation Value		$ 10,111,000
Series C [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		11,343,434
Number of Shares Issued		11,343,434
Number of Shares Outstanding		11,343,434
Carrying Value		$ 104,378,000
Liquidation Value		$ 193,167,000
Series D [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		7,151,873
Number of Shares Issued		7,151,873
Number of Shares Outstanding		7,151,873
Carrying Value		$ 110,756,000
Liquidation Value		$ 110,854,000
Series E [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		12,040,980
Number of Shares Issued		12,040,980
Number of Shares Outstanding		12,040,980
Carrying Value		$ 304,197,000
Liquidation Value		$ 305,018,000
Series F [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		61,344,029
Number of Shares Issued		61,344,029
Number of Shares Outstanding		61,344,029
Carrying Value		$ 168,957,000
Liquidation Value		$ 262,295,000
Series F-1 [Member]
Temporary Equity [Line Items]
Number of Shares Authorized		21,465,064
Number of Shares Issued		21,465,064
Number of Shares Outstanding		21,465,064
Carrying Value		$ 61,186,000
Liquidation Value		$ 61,491,000