XML 33 R23.htm IDEA: XBRL DOCUMENT v3.23.2

New Accounting Pronouncements	6 Months Ended
	Jun. 30, 2023
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	15.New Accounting Pronouncements The Company did not adopt any new accounting pronouncements during the six months ended June 30, 2023.

X

- Definition

Description Of New Accounting Pronouncements

+ References

No definition available.

+ Details

Name:	gbli_DescriptionOfNewAccountingPronouncementsTextBlock
Namespace Prefix:	gbli_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingChangesAndErrorCorrectionsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration