CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)	3 Months Ended
	Mar. 31, 2018 USD ($) $ / item	Mar. 31, 2017 USD ($)
Supplemental Disclosure of Cash Flows:
Income taxes paid	$ 0
Income taxes refunded	0	$ 808,000
Interest paid	2,899,000	2,550,000
Interest capitalized	$ 0	0
Supplemental disclosure of investing and financing activities
Annual surcharge, per round of golf played | $ / item	1
Minimum annual per round surcharge	$ 70,000
Maximum aggregate amount of per round surcharge	700,000
Contingent consideration on Golf Course Land Purchase reflected as an increase in increase in Golf Buildings, Improvements, and Equipment and also as an increase in Accrued and Other Liabilities	700,000
Aspen, Colorado
Supplemental disclosure of investing and financing activities
Tenant contribution	1,500,000
Florida
Supplemental disclosure of investing and financing activities
Tenant contribution	1,900,000
Real Estate Operations
Supplemental disclosure of investing and financing activities
Purchase price		$ 19,100,000
Single-tenant | Aspen, Colorado
Supplemental disclosure of investing and financing activities
Purchase price	$ 28,000,000