Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended
Aug. 31, 2022	Mar. 31, 2022	Oct. 31, 2021	Sep. 30, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Unfunded Balance				$ 6,262	$ 11,073
Percentage of FIGA Assessment levied on Collected Premium	0.70%	1.30%	0.70%
Amount of FIGA Assessments payable				$ 2,858

The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258

Name:	us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant