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Significant Accounting Policies (Narrative) (Details) |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 15, 2025 | Sep. 30, 2025 shares | Mar. 31, 2025 shares | Dec. 31, 2024 shares | May 03, 2007
Significant Accounting Policies [Line Items] |  |  |  |  |
Stock split ratio | 4 |  |  |  |
Additional shares of common stock received by each holder on record from stock split |  | 3 |  |  |
SIP expense - Year of grant |  |  |  |  | 50.00%
SIP expense - Remaining vesting period |  |  |  |  | 50.00%
SIP expense - Employees over 59 in year of grant |  |  |  |  | 100.00%
Percent of shares canceled post employment |  |  |  |  | 50.00%
Over 59 percent of shares eligible |  |  |  |  | 100.00%
Maximum [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Intangible assets useful lives |  | 5 years |  |  |
Leases, remaining terms |  | 11 years |  |  |
Maximum [Member] | Internally Developed Software [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Intangible assets useful lives |  | 3 years |  |  |
Maximum [Member] | Computer Equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment useful lives |  | 5 years |  |  |
Maximum [Member] | Office Furniture And Equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment useful lives |  | 7 years |  |  |
Minimum [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Intangible assets useful lives |  | 3 years |  |  |
Leases, remaining terms |  | 1 year |  |  |
Minimum [Member] | Computer Equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment useful lives |  | 3 years |  |  |
Minimum [Member] | Office Furniture And Equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment useful lives |  | 5 years |  |  |
Common Class A [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Common stock, shares authorized |  | 4,000,000,000 |  | 4,000,000,000 |
Common Class A [Member] | Previously Reported [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Common stock, shares authorized |  |  | 1,000,000,000 |  |
Common Class B [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Common stock, shares authorized |  | 1,000 |  | 400 |
Common Class B [Member] | Previously Reported [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Common stock, shares authorized |  |  | 100 |  |

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