| Cover | Jan. 31, 2022 |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | On February 4, 2022, Silvergate Capital Corporation (the “Company”) filed with the Securities and Exchange Commission a Current Report on Form 8-K (the “Original Filing”) to report that the Company acquired certain intellectual property and other technology assets and assumed certain associated contracts and other liabilities related to running a blockchain-based payment network (the “Asset Acquisition”) pursuant to an Asset Purchase Agreement, by and among the Company, as the Buyer, and the Libra Association, a Swiss association (“Libra”), Diem Networks US HoldCo, Inc., a Delaware corporation that is a subsidiary of Libra (“Diem US HoldCo”), Diem Networks US, Inc., a Delaware corporation that is a subsidiary of Diem US Holdco (“Diem US”), Diem Networks II LLC, a limited liability company organized under the laws of Switzerland and that is a subsidiary of Libra (“Diem II”), Diem LLC, a limited liability company organized under the laws of Switzerland and that is a subsidiary of Diem II (“Diem III”), and Diem Networks LLC, a limited liability company organized under the laws of Switzerland and that is a subsidiary of Diem III. |
| Document Period End Date | Jan. 31, 2022 |
| Entity File Number | 001-39123 |
| Entity Registrant Name | SILVERGATE CAPITAL CORPORATION |
| Entity Central Index Key | 0001312109 |
| Entity Tax Identification Number | 33-0227337 |
| Entity Incorporation, State or Country Code | MD |
| Entity Address, Address Line One | 4250 Executive Square |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | La Jolla |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92037 |
| City Area Code | 858 |
| Local Phone Number | 362-6300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Class A [Member] | |
| Title of 12(b) Security | Class A Common Stock, par value $0.01 per share |
| Trading Symbol | SI |
| Security Exchange Name | NYSE |
| Depositary Shares, Each Representing a 1/40th Interest in a Share of 5.375% Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A [Member] | |
| Title of 12(b) Security | Depositary Shares, Each Representing a 1/40th Interest in a Share of 5.375% Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A |
| Trading Symbol | SI PRA |
| Security Exchange Name | NYSE |
