Schedule III - Real Estate and Accumulated Depreciation (Detail) (USD $) | 12 Months Ended | | | |
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Encumbrances | $0 | | | |
Initial cost to company, land & land improvements | 1,236,700 | | | |
Initial cost to company, building & improvements | 1,289,860 | | | |
Cost capitalized subsequent to acquisition carrying costs | 0 | | | |
Gross amount at which carried at close of period land, buildings & improvements Total | 2,526,560 | 2,526,560 | 2,526,560 | 2,526,560 |
Accumulated depreciation | 1,281,626 | 1,244,774 | 1,207,922 | 1,171,070 |
Placentia, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Encumbrances | 0 | | | |
Initial cost to company, land & land improvements | 465,933 | | | |
Initial cost to company, building & improvements | 485,961 | | | |
Cost capitalized subsequent to acquisition carrying costs | 0 | | | |
Gross amount at which carried at close of period land, buildings & improvements Total | 951,894 | | | |
Accumulated depreciation | 482,865 | | | |
Date of construction | 1988 | | | |
Date acquired | 1988 | | | |
Lake Elsinore, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Encumbrances | 0 | | | |
Initial cost to company, land & land improvements | 449,058 | | | |
Initial cost to company, building & improvements | 468,361 | | | |
Cost capitalized subsequent to acquisition carrying costs | 0 | | | |
Gross amount at which carried at close of period land, buildings & improvements Total | 917,419 | | | |
Accumulated depreciation | 465,378 | | | |
Date of construction | 1989 | | | |
Date acquired | 1989 | | | |
San Bernardino, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Encumbrances | 0 | | | |
Initial cost to company, land & land improvements | 321,709 | | | |
Initial cost to company, building & improvements | 335,538 | | | |
Cost capitalized subsequent to acquisition carrying costs | 0 | | | |
Gross amount at which carried at close of period land, buildings & improvements Total | 657,247 | | | |
Accumulated depreciation | $333,383 | | | |
Date of construction | 1989 | | | |
Date acquired | 1989 | | | |
Land and land improvements [Member] | Placentia, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Life on which depreciation in latest income statement is computed | 20 years | | | |
Land and land improvements [Member] | Lake Elsinore, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Life on which depreciation in latest income statement is computed | 20 years | | | |
Land and land improvements [Member] | San Bernardino, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Life on which depreciation in latest income statement is computed | 20 years | | | |
Buildings and improvements [Member] | Placentia, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Life on which depreciation in latest income statement is computed | 35 years | | | |
Buildings and improvements [Member] | Lake Elsinore, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Life on which depreciation in latest income statement is computed | 35 years | | | |
Buildings and improvements [Member] | San Bernardino, CA [Member] | | | | |
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items] | | | | |
Life on which depreciation in latest income statement is computed | 35 years | | | |