3. Monty's Restaurant, Marina, and Office/Retail Property, Cocumut Grove, FL (Detail) (USD $)	1 Months Ended	12 Months Ended				22 Months Ended		101 Months Ended
	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2012		Dec. 31, 2012
Operating Leases, Rent Expense (in Dollars)		$ 901,000		$ 886,000
Payments for Capital Improvements								6,800,000
Mortgage Loans on Real Estate		8,190,000	[1]	8,532,000	[1]	8,190,000	[1]	8,190,000	[1]
Payments for (Proceeds from) Loans and Leases	1,600,000
Long-term Debt		11,005,000		11,713,000		11,005,000		11,005,000
Mortgage Loans on Real Estate, Periodic Payment Terms, Level Payments						$82,000
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate		2.45%				2.45%		2.45%
Repayments of Long-term Debt		198,400
Minimum [Member]
Capital Leases of Lessee, Contingent Rentals, Basis Spread on Variable Rate		8.00%				8.00%		8.00%
Maximum [Member]
Capital Leases of Lessee, Contingent Rentals, Basis Spread on Variable Rate		15.00%				15.00%		15.00%
Monty's [Member]
Long-term Debt	$ 8,800,000
HMG/Courtland Properties, Inc. [Member] | Bayshore Landing, LLC [Member]
Equity Method Investment, Ownership Percentage		50.00%				50.00%		50.00%
Christoph Family Trust [Member] | Bayshore Landing, LLC [Member]
Equity Method Investment, Ownership Percentage		50.00%				50.00%		50.00%
Square Footage, Rentable [Member]
Real Estate and Accumulated Depreciation, Description of Property		40,000
Acres [Member]
Real Estate and Accumulated Depreciation, Description of Property		3.7
Marina, Boat Slips [Member]
Real Estate and Accumulated Depreciation, Description of Property		132
Square Footage, Indoor-Outdoor Raw Bar [Member]
Real Estate and Accumulated Depreciation, Description of Property		16,000
Square Footage, Office/Retail Space [Member] | Boating and Marina Related Business Tenants [Member]
Real Estate and Accumulated Depreciation, Description of Property		15,000
Square Footage, Office/Retail Space [Member]
Real Estate and Accumulated Depreciation, Description of Property		24,000

[1] On March, 11 2011 this loan was amended and restated to $8.8 million including a principal payment of approximately $1.6 million. The amended and restated loan balance is to be repaid in monthly installments of approximately $82,000 including principal and interest. Interest remains at the same terms calculated at one-month LIBOR rate (.27% at December 31, 2011) plus 2.45%. The loan is unconditionally guaranteed by the Company and CFT, as well as a personal guarantee from a Trustee of CFT. The loan includes certain covenants including debt service coverage. The Company is in compliance with all debt covenants as of December 31, 2011. See Note 6 for discussion of interest rate swap agreement related to this loan.