Share-Based Compensation Expense - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Feb. 14, 2025 |
Feb. 13, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Terms of Award | Following the Merger, no further awards may be granted under the 2019 Equity Plan; however, awards granted under that plan will remain subject to the terms and conditions of the 2019 Equity Plan. Under the 2025 Equity Plan, an aggregate number of shares equal to the sum of (i) 10% of the fully-diluted shares of Fold Holdings, Inc. Common Stock as of the Closing, (ii) the number of shares that remained available for issuance under the 2019 Equity Plan as of the Closing and (iii) the number of shares that were subject to awards under the 2019 Equity Plan as of the Closing and which, following the Closing, became available for grant under the 2025 Equity Plan, were initially reserved under the 2025 Equity Plan. | |||||
| Share-Based payment award, description modified | a service condition that is typically satisfied based on the grantee's continuous service over 48 months with a one-year cliff vesting requirement (though some RSUs have been granted with different service-vesting schedules, including without the one-year cliff), and a performance condition related to the consummation of a liquidity event defined in the award agreements as the first to occur of a change of control or the first sale of Common Stock pursuant to an IPO. The Merger with FTAC Emerald on February 14, 2025 was deemed to have satisfied the performance condition criteria. Following the Merger, the Company's RSUs are subject to vesting requirements of each individual Award grant, which will typically include only a service condition based on the grantee's continuous service over 48 months with a one-year cliff vesting requirement. | |||||
| Service period | 48 months | |||||
| vesting period | 1 year | |||||
| Compensation expense | $ 4,400,000 | $ 1,700,000 | $ 1,700,000 | $ 3,400,000 | $ 6,900,000 | |
| Unrecognized compensation expense recognized on a straight-line basis | 2.86 years | |||||
| Share-based compensation expense | $ 3,353,459 | $ 6,895,480 | ||||
| FTAC Emerald [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Service period | 48 months | |||||
| vesting period | 1 year | |||||
| Conversion Percentage | 82.50% | |||||
| Compensation expense | $ 4,400,000 | |||||
| 2019 Equity Plan [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Percentage of fully-diluted shares of new fold common stock | 10.00% | |||||
| Employee Stock Option | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Shares, issued | 0 | 0 | ||||
| RSUs [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Additional RSAs granted in period | 2,843,562 | 3,064,628 | ||||
| RSUs [Member] | FTAC Emerald [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| RSU awards vested | $ 1,400,000 | |||||
| Weighted average per share fair value of options, vesting | $ 3.37 | |||||
| RSA [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Share-based compensation expense | $ 0 | $ 0 | ||||
| Material unrecognized compensation expense | $ 0 | $ 0 | ||||
| Additional RSAs granted in period | 0 | 0 | ||||
| Stock Appreciation Rights (SARs) | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Shares, issued | 0 | 0 | ||||
| Other Stock Awards [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Shares, issued | 0 | 0 | ||||
| Unvested Awards [Member] | ||||||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||||
| Compensation expense | $ 14,100,000 | |||||