Document and Entity Information
Document and Entity Information | Jul. 24, 2021 | May 05, 2021 |
Cover [Abstract] | ||
Document Type | 8-K | |
Document Period End Date | Jul. 24, 2021 | |
Entity Registrant Name | JAMES RIVER GROUP HOLDINGS, LTD. | |
Entity Central Index Key | 0001620459 | |
Amendment Flag | false | |
Entity Incorporation, State or Country Code | D0 | |
Entity File Number | 001-36777 | |
Entity Tax Identification Number | 98-0585280 | |
Entity Address, Address Line One | 90 Pitts Bay Road | |
Entity Address, Address Line Two | 2nd Floor | |
Entity Address, Address Line Three | Wellesley House | |
Entity Address, City or Town | Pembroke | |
Entity Address, Postal Zip Code | HM08 | |
Entity Address, Country | BM | |
City Area Code | 441 | |
Local Phone Number | 278-4580 | |
Written Communications | false | |
Soliciting Material | false | |
Pre-commencement Tender Offer | false | |
Pre-commencement Issuer Tender Offer | false | |
Title of 12(b) Security | Common Shares, par value $0.0002 per share | |
Trading Symbol | JRVR | |
Security Exchange Name | NASDAQ | |
Entity Emerging Growth Company | false |