Commitments and Contingencies - Additional information (Detail)	Dec. 31, 2023 USD ($)
Commitments and Contingencies Disclosure [Line Items]
Outstanding fund commitment	$ 6,000,000
Other commitment	5,900,000
Unfunded commitment	100,000
Small Business Investment Company [Member]
Commitments and Contingencies Disclosure [Line Items]
Other commitment	5,000,000
Book value	2,400,000
Unfunded commitment to partnership	$ 2,400,000

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

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