Description of business combination consideration

consideration of the Amalgamation, the Company issued an equal number of its common shares to Global Indemnity Limited shareholders at the record time of 5:00 p.m. Eastern Time on August 27, 2020 (the "Scheme Record Time"), on the following basis: for each Global Indemnity Limited A ordinary share cancelled, one class A common share of the Company was issued; and for each Global Indemnity Limited B ordinary share cancelled, one class B common share of the Company was issued

Scheme meeting and extraordinary general meeting date

Aug. 25, 2020

Number of common shares issued for each ordinary shares

1

Redomestication [Line Items]

Preferred shares, shares issued

4,000

0

Redomestication - Additional Information (Detail) - shares	9 Months Ended
	Sep. 30, 2020	Aug. 27, 2020	Dec. 31, 2019
Redomestication [Line Items]
Redomestication close	Aug. 28, 2020
Description of business combination consideration	consideration of the Amalgamation, the Company issued an equal number of its common shares to Global Indemnity Limited shareholders at the record time of 5:00 p.m. Eastern Time on August 27, 2020 (the "Scheme Record Time"), on the following basis: for each Global Indemnity Limited A ordinary share cancelled, one class A common share of the Company was issued; and for each Global Indemnity Limited B ordinary share cancelled, one class B common share of the Company was issued
Date of issuance of common shares for consideration of amalgamation	Aug. 27, 2020
Scheme meeting and extraordinary general meeting date	Aug. 25, 2020
Order granted date for terms and conditions of issuance of securities	Aug. 26, 2020
Class A Common Shares
Redomestication [Line Items]
Number of common shares issued for each ordinary shares	1
Class B Common Shares
Redomestication [Line Items]
Number of common shares issued for each ordinary shares	1
Series A Cumulative Fixed Rate Preferred Shares
Redomestication [Line Items]
Preferred shares, shares issued	4,000	4,000	0