Schedule of Condensed Consolidating Balance Sheets (Detail) - USD ($) $ in Thousands		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Total investments		$ 1,535,763		$ 1,563,542
Cash and cash equivalents		76,393		44,271	$ 56,215		$ 99,497
Investments in subsidiaries		0		0
Due from subsidiaries and affiliates		0		0
Notes receivable – affiliate		0		0
Interest receivable – affiliate		0		0
Premiums receivable, net		125,300		118,035
Reinsurance receivables, net		91,089		83,938
Funds held by ceding insurers		47,820		48,580
Federal income taxes receivable		5,511		10,989
Deferred federal income taxes		33,967		31,077
Deferred acquisition costs		70,119		70,677
Intangible assets		21,227		21,491
Goodwill		6,521		6,521
Prepaid reinsurance premiums		15,854		16,716
Receivable for securities sold		21,252
Other assets		62,332		60,048
Total assets		2,113,148		2,075,885	2,015,472
Liabilities:
Unpaid losses and loss adjustment expenses		651,073	$ 639,468	630,181	608,773	$ 645,959	680,031
Unearned premiums		314,061		314,861
Ceded balances payable		23,660		20,404
Payable for securities purchased		0		850
Contingent commissions		8,676		11,928
Debt		297,730		296,640
Notes payable – affiliates		0		0
Accrued interest payable – affiliates		0		0
Other liabilities		82,754		74,212
Total liabilities		1,377,954		1,349,076
Shareholders’ equity
Total shareholders’ equity		735,194		726,809	694,512
Total liabilities and shareholders’ equity		2,113,148		2,075,885
Global Indemnity Limited (Parent co-obligor) | Reportable Legal Entities
ASSETS
Total investments		252,209		44,468
Cash and cash equivalents		7,361		977	132		2,221
Investments in subsidiaries		1,003,701		1,218,491
Due from subsidiaries and affiliates		(110)		(3,612)
Notes receivable – affiliate		0		0
Interest receivable – affiliate		0		0
Premiums receivable, net		0		0
Reinsurance receivables, net		0		0
Funds held by ceding insurers		0		0
Federal income taxes receivable		0		0
Deferred federal income taxes		0		0
Deferred acquisition costs		0		0
Intangible assets		0		0
Goodwill		0		0
Prepaid reinsurance premiums		0		0
Receivable for securities sold		0
Other assets		17,950		9,394
Total assets		1,281,111		1,269,718
Liabilities:
Unpaid losses and loss adjustment expenses		0		0
Unearned premiums		0		0
Ceded balances payable		0		0
Payable for securities purchased				0
Contingent commissions		0		0
Debt		0		0
Notes payable – affiliates		520,498		520,498
Accrued interest payable – affiliates		20,764		20,343
Other liabilities		4,655		2,068
Total liabilities		545,917		542,909
Shareholders’ equity
Total shareholders’ equity		735,194		726,809
Total liabilities and shareholders’ equity		1,281,111		1,269,718
GBLI Holdings, LLC (Subsidiary co-obligor) | Reportable Legal Entities
ASSETS
Total investments		189,461		257,317
Cash and cash equivalents		3,043		2,663	353		26,039
Investments in subsidiaries		395,644		355,777
Due from subsidiaries and affiliates		(5,588)		(3,965)
Notes receivable – affiliate		98,549		80,049
Interest receivable – affiliate		5,557		5,014
Premiums receivable, net		0		0
Reinsurance receivables, net		0		0
Funds held by ceding insurers		0		0
Federal income taxes receivable		9,961		14,197
Deferred federal income taxes		35,828		31,833
Deferred acquisition costs		0		0
Intangible assets		0		0
Goodwill		0		0
Prepaid reinsurance premiums		0		0
Receivable for securities sold		0
Other assets		20,335		12,622
Total assets		752,790		755,507
Liabilities:
Unpaid losses and loss adjustment expenses		0		0
Unearned premiums		0		0
Ceded balances payable		0		0
Payable for securities purchased				0
Contingent commissions		0		0
Debt		304,587		303,629
Notes payable – affiliates		0		0
Accrued interest payable – affiliates		0		0
Other liabilities		25,989		17,600
Total liabilities		330,576		321,229
Shareholders’ equity
Total shareholders’ equity		422,214		434,278
Total liabilities and shareholders’ equity		752,790		755,507
Other Global Indemnity Limited Subsidiaries and Eliminations (non-co-obligor subsidiaries)
ASSETS
Total investments	[1]	1,094,093		1,261,757
Cash and cash equivalents	[1]	65,989		40,631	$ 55,730		$ 71,237
Investments in subsidiaries	[1]	422,214		434,278
Due from subsidiaries and affiliates	[1]	5,698		7,577
Notes receivable – affiliate	[1]	445,498		445,498
Interest receivable – affiliate	[1]	17,259		17,258
Premiums receivable, net	[1]	125,300		118,035
Reinsurance receivables, net	[1]	91,089		83,938
Funds held by ceding insurers	[1]	47,820		48,580
Federal income taxes receivable	[1]	(4,450)		(3,208)
Deferred federal income taxes	[1]	(1,861)		(756)
Deferred acquisition costs	[1]	70,119		70,677
Intangible assets	[1]	21,227		21,491
Goodwill	[1]	6,521		6,521
Prepaid reinsurance premiums	[1]	15,854		16,716
Receivable for securities sold	[1]	21,252
Other assets	[1]	30,904		45,021
Total assets	[1]	2,474,526		2,614,014
Liabilities:
Unpaid losses and loss adjustment expenses	[1]	651,073		630,181
Unearned premiums	[1]	314,061		314,861
Ceded balances payable	[1]	23,660		20,404
Payable for securities purchased	[1]			850
Contingent commissions	[1]	8,676		11,928
Debt	[1]	0		0
Notes payable – affiliates	[1]	23,549		5,049
Accrued interest payable – affiliates	[1]	2,052		1,929
Other liabilities	[1]	52,110		54,544
Total liabilities	[1]	1,075,181		1,039,746
Shareholders’ equity
Total shareholders’ equity	[1]	1,399,345		1,574,268
Total liabilities and shareholders’ equity	[1]	2,474,526		2,614,014
Consolidation Adjustments
ASSETS
Total investments	[2]	0		0
Cash and cash equivalents	[2]	0		0
Investments in subsidiaries	[2]	(1,821,559)		(2,008,546)
Due from subsidiaries and affiliates	[2]	0		0
Notes receivable – affiliate	[2]	(544,047)		(525,547)
Interest receivable – affiliate	[2]	(22,816)		(22,272)
Premiums receivable, net	[2]	0		0
Reinsurance receivables, net	[2]	0		0
Funds held by ceding insurers	[2]	0		0
Federal income taxes receivable	[2]	0		0
Deferred federal income taxes	[2]	0		0
Deferred acquisition costs	[2]	0		0
Intangible assets	[2]	0		0
Goodwill	[2]	0		0
Prepaid reinsurance premiums	[2]	0		0
Receivable for securities sold	[2]	0
Other assets	[2]	(6,857)		(6,989)
Total assets	[2]	(2,395,279)		(2,563,354)
Liabilities:
Unpaid losses and loss adjustment expenses	[2]	0		0
Unearned premiums	[2]	0		0
Ceded balances payable	[2]	0		0
Payable for securities purchased	[2]			0
Contingent commissions	[2]	0		0
Debt	[2]	(6,857)		(6,989)
Notes payable – affiliates	[2]	(544,047)		(525,547)
Accrued interest payable – affiliates	[2]	(22,816)		(22,272)
Other liabilities	[2]	0		0
Total liabilities	[2]	(573,720)		(554,808)
Shareholders’ equity
Total shareholders’ equity	[2]	(1,821,559)		(2,008,546)
Total liabilities and shareholders’ equity	[2]	$ (2,395,279)		$ (2,563,354)

[1] Includes all other subsidiaries of Global Indemnity Limited and eliminations

[2] Includes Parent co-obligor and subsidiary co-obligor consolidating adjustments