Long-Term Debt (Details)	1 Months Ended	3 Months Ended
	Jul. 22, 2020 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 30, 2021 USD ($)
Miami office building [Member]
Debt Instrument [Line Items]
Initial borrowing amount		$ 4,000,000		$ 4,000,000
Acquired commercial office building and associated property				6,800,000
Unused commitment with Miami office building		338,000		$ 338,000
Line of Credit with East West Bank [Member]
Debt Instrument [Line Items]
Interest expense		$ 29,000	$ 37,000
Interest rate		5.00%	3.25%
Mortgage with East West Bank [Member]
Debt Instrument [Line Items]
Interest expense		$ 25,000	$ 0
Interest rate		3.60%
Loan and Security Agreement [Member] | East West Bank [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under term loan	$ 10,000,000
Loan term	4 years
Repayment term	4 years
Term loan interest rate description		Term loans made pursuant to the agreement shall bear interest at the prime rate as reported by the Wall Street Journal, provided that the minimum interest rate on any term loan will not be less than 3.25%.
Origination fee	0.25%
Debt coverage ratio	1.35
Amount of tangible net worth minimum	$ 25,000,000
Net capital ratio	10.00%
Covenants description		Certain other non-financial covenants include that the Company must promptly notify East West Bank of the creation or acquisition of any subsidiary that at any time owns assets with a value of $100,000 or greater.
Term Loan [Member]
Debt Instrument [Line Items]
Outstanding balance on long-term debt		$ 3,400,000
Debt coverage ratio		1.4
Remaining available line of credit		$ 5,000,000.0
Term Loan [Member] | East West Bank [Member]
Debt Instrument [Line Items]
Term loan interest rate description		The repayment schedule will utilize a 30-year amortization period, with a balloon on the remaining amount due at the end of ten years.
Covenants description		This percentage is 5% in the first year and decreases by 1% each year thereafter, with the prepayment penalty ending after 5 years.
Interest rate		3.60%
Interest rate line of credit		3.60%