Investment Property and Accumulated Depreciation (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Investment Property and Accumulated Depreciation [Abstract]
Retired Property Improvements And Replacements Cost Basis	$ 358,000	$ 323,000
Retired Property Improvements And Replacements Accumulated Depreciation	358,000	323,000
Investment Property Gross Cost Federal Tax Basis	38,071,000	37,252,000
Investment Property Accumulated Depreciation Federal Tax Basis	$ 30,498,000	$ 28,691,000