| Cover Page | Nov. 10, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Nov. 10, 2021 |
| Entity Registrant Name | DOMA HOLDINGS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39754 |
| Entity Tax Identification Number | 84-1956909 |
| Entity Address, Address Line One | 101 Mission Street |
| Entity Address, Address Line Two | Suite 740 |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94105 |
| City Area Code | 650 |
| Local Phone Number | 419-3827 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001722438 |
| Common stock, par value $0.0001 per share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | DOMA |
| Security Exchange Name | NYSE |
| Warrants to purchase common stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase common stock |
| Trading Symbol | DOMA.WS |
| Security Exchange Name | NYSE |
