Significant Accounting Policies (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($)
Summary of Investment Holdings [Line Items]
Impairment losses for collateralized loan receivable	$ 0
Promissory Note [Member]
Summary of Investment Holdings [Line Items]
Accrued interest rate	7.00%
Additional interest rate	2.00%
Repayment of notes, description	Repayment of the note consist of four annual installments of $0.6 million, commencing on August 31, 2024, followed by a final payment of outstanding principal and accrued interest on the August 31, 2028 maturity date, subject to a ratable reduction of the remaining total payments in the event of any prepayment.
Frequency of periodic payment	four annual installments
Repayment of notes	$ 600,000
First payment date	Aug. 31, 2024
Maturity date	Aug. 31, 2028