Investments in Affiliates - Summary of Transactions in, and Earnings from, Investments in Affiliates (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2021 USD ($)
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Capital gains distributions	$ 8,454

The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

Name:	us-gaap_ProceedsFromContributionsFromAffiliates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration