Schedule III - Real Estate and Accumulated Depreciation (Details) - Real Estate and Accumulated Depreciation (USD $) | 12 Months Ended | |
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 |
Real Estate Properties [Line Items] | | | |
Real estate sales | ($1,529,227) | ($18,023,870) | |
Real estate accumulated depreciation | -6,075,287 | -9,599,719 | -6,518,160 |
Real estate carrying value | 163,016,805 | | |
One Hundred Sixty Nine Condominium Units And One Hundred Sixty Unit Vacant Apartment Building Miami Florida [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 13,983,086 | | |
Real estate initial cost | 34,560,000 | | |
Real estate capitalized costs | 2,136,658 | | |
Real estate accumulated depreciation | -2,342,700 | | |
Real estate carrying value | 34,353,958 | | |
Real estate date acquired | 2-Feb-11 | | |
Depreciable lives | 27 years 6 months | | |
Retail Complex, Greeley, Colorado (Held Within 720 University, LLC) [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 1 year | | |
Retail Complex, Greeley, Colorado (Held Within 720 University, LLC) [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Retail Complex, Greeley, Colorado (Held Within 720 University, LLC) [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 9,741,463 | | |
Real estate initial cost | 4,136,239 | | |
Real estate capitalized costs | 7,539,507 | | |
Real estate sales | -128,274 | | |
Real estate carrying value | 11,547,472 | | |
Real estate date acquired | 31-Jul-00 | | |
Commercial and Residential Land Under Development, South Lake Tahoe, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 3,400,000 | | |
Real estate initial cost | 17,871,561 | | |
Real estate capitalized costs | 12,578,335 | | |
Real estate carrying value | 30,449,896 | | |
Real estate date acquired | NaN, NaN | | |
Depreciable lives | | | |
Retail Complex, South Lake Tahoe, California [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 5 years | | |
Retail Complex, South Lake Tahoe, California [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Retail Complex, South Lake Tahoe, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 10,445,000 | | |
Real estate initial cost | 6,409,617 | | |
Real estate capitalized costs | 16,946,784 | | |
Real estate accumulated depreciation | -144,505 | | |
Real estate carrying value | 23,211,896 | | |
Real estate date acquired | NaN, NaN | | |
The 133 Condominium Units Phoenix Arizona Held Within 54th Street Condos LLC [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 5 years | | |
The 133 Condominium Units Phoenix Arizona Held Within 54th Street Condos LLC [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 27 years 6 months | | |
The 133 Condominium Units Phoenix Arizona Held Within 54th Street Condos LLC [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 5,822,597 | | |
Real estate capitalized costs | 3,459,377 | | |
Real estate impairment writedowns | -1,443,790 | | |
Real estate accumulated depreciation | -904,955 | | |
Real estate carrying value | 6,933,229 | | |
Real estate date acquired | 18-Nov-09 | | |
Residential and Commercial Land Gypsum Colorado [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 9,600,000 | | |
Real estate capitalized costs | 53,434 | | |
Real estate impairment writedowns | -3,840,000 | | |
Real estate carrying value | 5,813,434 | | |
Real estate date acquired | 1-Oct-11 | | |
Depreciable lives | | | |
Assisted Living Facility, Bensalem, Pennsylvania [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 5,018,166 | | |
Real estate accumulated depreciation | -13,166 | | |
Real estate carrying value | 5,005,000 | | |
Real estate date acquired | 12-Dec-14 | | |
Depreciable lives | 27 years 6 months | | |
Medical Office Condominium Complex, Gilbert, Arizona [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 5 years | | |
Medical Office Condominium Complex, Gilbert, Arizona [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Medical Office Condominium Complex, Gilbert, Arizona [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 4,535,781 | | |
Real estate capitalized costs | 180,378 | | |
Real estate carrying value | 4,716,159 | | |
Real estate date acquired | 19-May-10 | | |
Sixty Condominium Units, Lakewood, Washington [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 6,616,881 | | |
Real estate capitalized costs | 65,502 | | |
Real estate impairment writedowns | -1,882,384 | | |
Real estate accumulated depreciation | -435,256 | | |
Real estate carrying value | 4,364,743 | | |
Real estate date acquired | 20-Aug-10 | | |
Depreciable lives | 27 years 6 months | | |
Storage Facility, Stockton, California [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 15 years | | |
Storage Facility, Stockton, California [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Storage Facility, Stockton, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 5,674,000 | | |
Real estate capitalized costs | 42,980 | | |
Real estate impairment writedowns | -1,580,079 | | |
Real estate accumulated depreciation | -289,017 | | |
Real estate carrying value | 3,847,884 | | |
Real estate date acquired | 3-Jun-08 | | |
Office Condominium Complex, Roseville, California [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 2 years | | |
Office Condominium Complex, Roseville, California [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Office Condominium Complex, Roseville, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 8,569,286 | | |
Real estate capitalized costs | 303,178 | | |
Real estate sales | -1,095,670 | | |
Real estate impairment writedowns | -3,712,707 | | |
Real estate accumulated depreciation | -379,884 | | |
Real estate carrying value | 3,684,203 | | |
Real estate date acquired | 26-Sep-08 | | |
Retail Building, Sacramento, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 3,890,968 | | |
Real estate carrying value | 3,890,968 | | |
Real estate date acquired | 3-Sep-10 | | |
Depreciable lives | | | |
The 75 Residential Lots, Auburn, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 13,746,625 | | |
Real estate capitalized costs | 36,745 | | |
Real estate impairment writedowns | -9,904,826 | | |
Real estate carrying value | 3,878,544 | | |
Real estate date acquired | 27-Sep-07 | | |
Depreciable lives | | | |
Industrial Building, Sunnyvale, California [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 10 years | | |
Industrial Building, Sunnyvale, California [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Industrial Building, Sunnyvale, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 3,428,885 | | |
Real estate capitalized costs | 54,514 | | |
Real estate accumulated depreciation | -455,665 | | |
Real estate carrying value | 3,027,734 | | |
Real estate date acquired | 5-Nov-09 | | |
Twelve Condominium and Three Commercial Units Tacoma Washington [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 27 years 6 months | | |
Twelve Condominium and Three Commercial Units Tacoma Washington [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 39 years | | |
Twelve Condominium and Three Commercial Units Tacoma Washington [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 2,486,400 | | |
Real estate capitalized costs | 84,909 | | |
Real estate accumulated depreciation | -162,628 | | |
Real estate carrying value | 2,408,681 | | |
Real estate date acquired | 8-Jul-11 | | |
Marina and Boat Club With One Hundred Seventy Nine Boat Slips Isleton California [Member] | Minimum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 5 years | | |
Marina and Boat Club With One Hundred Seventy Nine Boat Slips Isleton California [Member] | Maximum [Member] | | | |
Real Estate Properties [Line Items] | | | |
Depreciable lives | 15 years | | |
Marina and Boat Club With One Hundred Seventy Nine Boat Slips Isleton California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 2,002,525 | | |
Real estate capitalized costs | 255,543 | | |
Real estate accumulated depreciation | -37,620 | | |
Real estate carrying value | 2,220,448 | | |
Real estate date acquired | 29-Jan-13 | | |
Undeveloped Land, San Jose, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 3,025,992 | | |
Real estate impairment writedowns | -1,067,592 | | |
Real estate carrying value | 1,958,400 | | |
Real estate date acquired | 27-Dec-02 | | |
Depreciable lives | | | |
Golf Course, Auburn, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 1,917,981 | | |
Real estate capitalized costs | 102,429 | | |
Real estate carrying value | 2,020,410 | | |
Real estate date acquired | 20-Jun-09 | | |
Depreciable lives | | | |
Unimproved Residential and Commercial Land, Bethel Island, California [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate initial cost | 2,336,640 | | |
Real estate sales | -1,867 | | |
Real estate carrying value | 2,334,773 | | |
Real estate date acquired | 11-Mar-14 | | |
Depreciable lives | | | |
Miscellaneous Real Estate [Member] | | | |
Real Estate Properties [Line Items] | | | |
Real estate encumbrances (Notes payable) | 0 | | |
Real estate accumulated depreciation | -909,891 | | |
Real estate carrying value | $7,348,973 | | |
Real estate date acquired | NaN, NaN | | |
Depreciable lives | | | |