Note 9 - Segment Information (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Real Estate Segment [Member] | Operating Segments [Member]
Operating revenues	[1]	$ 12,501	$ 23,304
Operating costs and expenses		(2,515)	(2,562)
General and administrative and other expenses		(819)	(655)
Operating income (loss)		9,167	20,137
Capital expenditures	[2]	20	268
Assets	[3]	12,104	11,625
Leasing Segment [Member] | Operating Segments [Member]
Operating revenues	[1]	5,546	5,404
Operating costs and expenses		(2,208)	(2,501)
Depreciation expense		(1,646)	(1,807)
General and administrative and other expenses		(619)	(450)
Operating income (loss)		1,073	646
Assets	[3]	27,060	30,529
Utilities Segment [Member] | Operating Segments [Member]
Operating revenues	[1]	3,335	3,310
Operating costs and expenses		(2,260)	(2,375)
Depreciation expense		(397)	(410)
General and administrative and other expenses		(256)	(189)
Operating income (loss)		422	336
Assets	[3]	4,003	4,194
Resort Amenities Segment [Member] | Operating Segments [Member]
Operating revenues	[1]	1,263	1,214
Operating costs and expenses		(872)	(854)
General and administrative and other expenses		(380)	(282)
Operating income (loss)		11	28
Assets	[3]	1,309	1,256
Corporate and Other [Member] | Other Segments [Member]
Operating revenues	[1],[4]	141	32
Operating costs and expenses	[4]	(53)	(46)
Depreciation expense	[4]	(72)	(84)
General and administrative and other expenses	[4]	(1,357)	(1,144)
Operating income (loss)	[4]	(1,341)	(1,242)
Assets	[3],[4]	2,123	1,667
Operating Segments [Member]
Operating revenues	[1]	22,786	33,264
Operating costs and expenses		(7,908)	(8,338)
Depreciation expense		(2,115)	(2,301)
General and administrative and other expenses		(3,431)	(2,720)
Operating income (loss)		9,332	19,905
Interest expense		(2,519)	(2,270)
Income from continuing operations		6,813	17,635
Capital expenditures	[2]	20	268
Assets	[3]	46,599	49,271
Operating revenues		22,786	33,264
Operating costs and expenses		13,454	13,359
Depreciation expense		2,115	2,301
General and administrative and other expenses		2,181	1,974
Operating income (loss)		9,332	19,905
Assets		$ 46,599	$ 49,271

[1] Amounts are principally revenues from external customers and exclude equity in earnings of affiliates. Intersegment revenues were insignificant.

[2] Primarily includes expenditures for property and deferred costs.

[3] Segment assets are located in the United States.

[4] Consists primarily of miscellaneous transactions and unallocated general and administrative, and pension and other post-retirement expenses.