Schedule of Condensed Consolidating Balance Sheets (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Total investments		$ 1,485,794	$ 1,410,655
Cash and cash equivalents		37,874	99,497	$ 73,522	$ 74,414
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		92,477	87,679
Reinsurance receivables, net		102,346	114,418
Funds held by ceding insurers		44,902	49,206
Federal income taxes receivable		11,069	10,866
Deferred federal income taxes		40,943	48,589
Deferred acquisition costs		62,854	61,676
Intangible assets		21,888	22,020
Goodwill		6,521	6,521
Prepaid reinsurance premiums		19,041	20,594
Receivable for securities sold		0	15
Other assets		59,199	28,530
Total assets		1,984,908	1,960,266	1,963,714
Liabilities:
Unpaid losses and loss adjustment expenses		645,959	680,031	615,125	634,664
Unearned premiums		281,684	281,912
Ceded balances payable		14,573	14,994
Payable for securities purchased		5,252	0
Contingent commissions		7,170	10,636
Debt		294,581	288,565
Notes payable – affiliates		0	0
Accrued interest payable – affiliates		0	0
Other liabilities		68,034	55,069
Total liabilities		1,317,253	1,331,207
Shareholders’ equity
Total shareholders’ equity		667,655	629,059	703,752
Total liabilities and shareholders’ equity		1,984,908	1,960,266
Global Indemnity Limited (Parent co-obligor)
ASSETS
Total investments		55,358	55,377
Cash and cash equivalents		366	2,221	4,832	11,089
Investments in subsidiaries		1,147,828	1,105,032
Due from subsidiaries and affiliates		(1,716)	584
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	0
Other assets		8,411	8,461
Total assets		1,210,247	1,171,675
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		19,707	19,499
Other liabilities		2,387	2,619
Total liabilities		542,592	542,616
Shareholders’ equity
Total shareholders’ equity		667,655	629,059
Total liabilities and shareholders’ equity		1,210,247	1,171,675
Global Indemnity Group, Inc.(Subsidiary co-obligor)
ASSETS
Total investments		263,820	233,479
Cash and cash equivalents		656	26,039	8,166	7,749
Investments in subsidiaries		311,137	296,357
Due from subsidiaries and affiliates		(4,097)	(2,133)
Notes receivable – affiliate		80,049	80,049
Interest receivable – affiliate		4,157	3,869
Premiums receivable, net		0	0
Reinsurance receivables, net		0	0
Funds held by ceding insurers		0	0
Federal income taxes receivable		13,242	4,631
Deferred federal income taxes		40,034	44,481
Deferred acquisition costs		0	0
Intangible assets		0	0
Goodwill		0	0
Prepaid reinsurance premiums		0	0
Receivable for securities sold		306	0
Other assets		8,656	5,085
Total assets		717,960	691,857
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		301,768	295,818
Notes payable – affiliates		402,310	402,310
Accrued interest payable – affiliates		0	0
Other liabilities		14,409	13,651
Total liabilities		718,487	711,779
Shareholders’ equity
Total shareholders’ equity		(527)	(19,922)
Total liabilities and shareholders’ equity		717,960	691,857
Other Global Indemnity Limited Subsidiaries and Eliminations (non-co-obligor subsidiaries)
ASSETS
Total investments	[1]	1,166,616	1,121,799
Cash and cash equivalents	[1]	36,852	71,237	$ 60,524	$ 55,576
Investments in subsidiaries	[1]	(527)	(19,922)
Due from subsidiaries and affiliates	[1]	5,813	1,549
Notes receivable – affiliate	[1]	847,808	847,808
Interest receivable – affiliate	[1]	17,258	17,425
Premiums receivable, net	[1]	92,477	87,679
Reinsurance receivables, net	[1]	102,346	114,418
Funds held by ceding insurers	[1]	44,902	49,206
Federal income taxes receivable	[1]	(2,173)	6,235
Deferred federal income taxes	[1]	909	4,108
Deferred acquisition costs	[1]	62,854	61,676
Intangible assets	[1]	21,888	22,020
Goodwill	[1]	6,521	6,521
Prepaid reinsurance premiums	[1]	19,041	20,594
Receivable for securities sold	[1]	(306)	15
Other assets	[1]	49,319	22,237
Total assets	[1]	2,471,598	2,434,605
Liabilities:
Unpaid losses and loss adjustment expenses	[1]	645,959	680,031
Unearned premiums	[1]	281,684	281,912
Ceded balances payable	[1]	14,573	14,994
Payable for securities purchased	[1]	5,252
Contingent commissions	[1]	7,170	10,636
Debt	[1]	0	0
Notes payable – affiliates	[1]	5,049	5,049
Accrued interest payable – affiliates	[1]	1,708	1,795
Other liabilities	[1]	51,238	38,799
Total liabilities	[1]	1,012,633	1,033,216
Shareholders’ equity
Total shareholders’ equity	[1]	1,458,965	1,401,389
Total liabilities and shareholders’ equity	[1]	2,471,598	2,434,605
Consolidation Adjustments
ASSETS
Total investments	[2]	0	0
Cash and cash equivalents	[2]	0	0
Investments in subsidiaries	[2]	(1,458,438)	(1,381,467)
Due from subsidiaries and affiliates	[2]	0	0
Notes receivable – affiliate	[2]	(927,857)	(927,857)
Interest receivable – affiliate	[2]	(21,415)	(21,294)
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	0
Other assets	[2]	(7,187)	(7,253)
Total assets	[2]	(2,414,897)	(2,337,871)
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]	(7,187)	(7,253)
Notes payable – affiliates	[2]	(927,857)	(927,857)
Accrued interest payable – affiliates	[2]	(21,415)	(21,294)
Other liabilities	[2]	0	0
Total liabilities	[2]	(956,459)	(956,404)
Shareholders’ equity
Total shareholders’ equity	[2]	(1,458,438)	(1,381,467)
Total liabilities and shareholders’ equity	[2]	$ (2,414,897)	$ (2,337,871)

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

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