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Stockholders' Equity - Narrative (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 31, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Mar. 01, 2024 | Dec. 31, 2023
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, authorized (in shares) |  | 50,000,000 |  | 50,000,000 |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  | $ 0.001 |  | $ 0.001 |  |  |  |  |  |
Common stock, par value (in dollars per share) |  | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 |  |  |  | $ 0.001
Preferred stock, issued (in shares) |  | 0 |  | 0 |  |  |  |  |  |
Class A Stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, authorized (in shares) |  | 50,000,000 |  | 50,000,000 |  | 50,000,000 |  |  |  |
Common stock, par value (in dollars per share) |  | $ 0.001 |  | $ 0.001 |  |  |  |  |  |
Common stock, issued (in shares) |  | 10,420,884 |  | 10,420,884 |  | 10,231,736 |  |  |  |
Common stock, outstanding (in shares) |  | 10,420,884 | 10,231,736 | 10,420,884 | 10,231,736 | 10,231,736 | 10,418,259 | 10,227,845 | 10,357,376 | 10,186,783
Stock repurchased and cancellation (in shares) |  | 0 | 5,981 | 11,385 | 243,806 |  |  |  |  |
Class A Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Quarterly dividend payable amount per share (in dollars per share) | $ 0.18 |  |  |  |  |  |  |  |  |
Class A Stock | New Program |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchased and cancellation (in shares) |  | 0 | 5,981 | 11,385 | 243,806 |  |  |  |  |
Total consideration for repurchase of stock |  |  | $ 294,862 | $ 670,310 | $ 9,600,000 |  |  |  |  |
Stock repurchased (in dollars per share) |  |  | $ 49.30 | $ 58.88 | $ 39.39 |  |  |  |  |
Remaining amount authorized for repurchase (in shares) |  | 486,508 |  | 486,508 |  |  |  |  |  | 223,699
Class A Stock | Share Repurchase Program, March (2024) |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Repurchase of class A common stock (in shares) |  |  |  |  |  |  |  |  | 518,000 |
Shares repurchased as a percent of shares outstanding (as a percent) |  |  |  |  |  |  |  |  | 5.00% |
Stock repurchased and cancellation (in shares) |  |  |  |  |  | 243,806 |  |  |  |
Total consideration for repurchase of stock |  |  |  |  |  | $ 9,600,000 |  |  |  |
Remaining amount authorized for repurchase (in shares) |  |  |  |  |  | 497,893 |  |  |  |
Stock repurchased and retired during period, per share (in dollars per share) |  |  |  |  |  | $ 39.39 |  |  |  |
Class B Stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, authorized (in shares) |  | 99,665 |  | 99,665 |  | 99,665 |  |  |  |
Common stock, par value (in dollars per share) |  | $ 0.001 |  | $ 0.001 |  |  |  |  |  |
Common stock, issued (in shares) |  | 99,665 |  | 99,665 |  | 99,665 |  |  |  |
Common stock, outstanding (in shares) |  | 99,665 |  | 99,665 |  | 99,665 |  |  |  |
Class B Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Quarterly dividend payable amount per share (in dollars per share) | $ 0.18 |  |  |  |  |  |  |  |  |

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