Fair Value Measurements - Summary of warrants (Detail) $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2021
USD ($)
| |
| Private Placement Warrants | |
| Class Of Warrant Or Right [Line Items] | |
| Fair value as of beginning | $ 0 |
| Acquired in Business Combination | 32,399 |
| Issued in connection with closing of the Forward Purchase Agreement | 7,879 |
| Change in value | (36,208) |
| Converted into equity | |
| Fair value as of ending | 4,070 |
| Old Talkspace Warrants | |
| Class Of Warrant Or Right [Line Items] | |
| Fair value as of beginning | 444 |
| Acquired in Business Combination | |
| Issued in connection with closing of the Forward Purchase Agreement | |
| Change in value | 165 |
| Converted into equity | (609) |
| Fair value as of ending |