5. Investment in Local Partnerships: Combined Statements of Operations of the Local Partnerships (Details) - Combined Statements Of Operations - USD ($)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Rental	$ 429,155	$ 981,398
Interest and other	2,734	13,908
TOTAL REVENUE	431,889	995,306
Administrative	55,049	120,345
Payroll	73,709	113,930
Utilities	80,754	134,945
Operating and maintenance	79,768	166,953
Taxes and insurance	76,798	149,389
Financial	47,363	151,177
Depreciation and amortization	249,204	380,435
TOTAL EXPENSES	662,645	1,217,174
LOSS BEFORE GAIN ON SALE OF PROPERTY	(230,756)	(221,868)
GAIN ON SALE OF PROPERTY		711,374
NET INCOME (LOSS)	(230,756)	489,506
Net Income (Loss) Attributable To General partners and other limited partners (includes $228,448 and $217,171 of Partnership losses in excess of investment and specially allocated income of $702,870 in 2016)	$ (230,756)	$ 489,506

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Represents the monetary amount of LOSS BEFORE GAIN ON SALE OF PROPERTY, during the indicated time period.

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Represents the monetary amount of Net Income (Loss) Attributable To General partners and other limited partners (includes $228,448 and $217,171 of Partnership losses in excess of investment and specially allocated income of $702,870 in 2016), during the indicated time period.

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Represents the monetary amount of Rental, during the indicated time period.

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Represents the monetary amount of TOTAL REVENUE, during the indicated time period.

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Represents the monetary amount of NET INCOME (LOSS), during the indicated time period.

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Total costs of sales and operating expenses for the period.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
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The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

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Costs incurred and are directly related to generating maintenance revenues. Also includes cost of maintenance on client contracts.

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The aggregate total of real estate taxes and insurance expense.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 225
-SubTopic 10
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Expenditures for salaries for officers and non-officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense or other labor-related non-salary expense. For commercial and industrial companies, excludes any direct and overhead labor that is included in cost of goods sold.

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Utilities costs incurred during the reporting period for services, such as water, sewer, gas, electricity and telephone required to operate a building.

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