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	$ 1,380,099	$ 2,227,795
Interest and other	35,090	121,318
TOTAL REVENUE	1,415,189	2,349,113
Administrative	215,732	279,499
Payroll	161,618	303,714
Utilities	197,457	409,131
Operating and maintenance	195,659	473,314
Taxes and insurance	138,041	196,083
Financial	165,585	258,378
Depreciation and amortization	452,802	563,241
TOTAL EXPENSES	1,526,894	2,483,360
Net Loss	(111,705)	(134,247)
Net loss attributable to general partners and other limited partners (includes $112,218 and $180,177 of Trust losses in excess of investment and specially allocated income of $1,631 and $47,273)	$ (111,705)	$ (134,247)