Document and Entity Information [Abstract] ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash Cash and Cash Equivalents, at Carrying Value Receivable from Del Taco LLC Due from Related Parties, Current Other current assets Other Assets, Current Other current assets Total current assets Assets, Current, Total Total current assets PROPERTY AND EQUIPMENT: Property, Plant and Equipment, Net [Abstract] Land Land Land improvements Land Improvements Buildings and improvements Buildings and Improvements, Gross Machinery and equipment Machinery and Equipment, Gross Machinery and equipment Total property and equipment Property, Plant and Equipment, Gross Property and equipment, gross Less--accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less--accumulated depreciation Total property and equipment Property, Plant and Equipment, Net Property and equipment, net Total property and equipment Assets Total assets LIABILITIES AND PARTNERS' EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Payable to limited partners Due to Related Parties, Current Accounts payable Accounts Payable, Current Accounts payable Total current liabilities Liabilities, Current, Total Total current liabilities PARTNERS' EQUITY: Partners' Capital [Abstract] Limited partners; 8,751 units outstanding at March 31, 2012 and December 31, 2011 Limited Partners' Capital Account Limited partners, units outstanding Limited Partners' Capital Account, Units Outstanding General partner-Del Taco LLC General Partners' Capital Account General partner-Del Taco LLC Total partners' equity Partners' Capital Total partners' equity Total partners' equity Liabilities and Equity Total liabilities and partners' equity RENTAL REVENUES Operating Leases, Income Statement, Lease Revenue RENTAL REVENUES EXPENSES: Costs and Expenses [Abstract] General and administrative General and Administrative Expense Depreciation Depreciation Depreciation Total expenses Operating Expenses Total expenses Operating income Operating Income (Loss) Operating income OTHER INCOME: Nonoperating Income (Expense) [Abstract] Interest Investment Income, Interest Other Other Nonoperating Income Other Net income Net Income (Loss) Attributable to Parent Net income Net income per limited partnership unit (Note 2) Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic Net income per limited partnership unit (Note 2) Number of units used in computing per unit amounts Weighted Average Limited Partnership Units Outstanding, Basic CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivable from Del Taco LLC Increase (Decrease) in Due from Related Parties, Current Receivable from Del Taco LLC Other current assets Increase (Decrease) in Other Operating Assets Other current assets Payable to limited partners Increase (Decrease) in Accounts Payable, Related Parties Accounts payable Increase (Decrease) in Accounts Payable Accounts payable Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities CASH FLOWS FROM FINANCING ACTIVITIES - Net Cash Provided by (Used in) Financing Activities [Abstract] Cash distributions to partners Payments of Dividends Cash distributions to partners Net change in cash Cash and Cash Equivalents, Period Increase (Decrease) Net change in cash Beginning cash balance Ending cash balance BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Basis of Presentation [Abstract] Basis of Presentation [Abstract] NET INCOME PER LIMITED PARTNERSHIP UNIT Earnings Per Share [Text Block] Net Income Per Limited Partnership Unit [Abstract] Net Income Per Limited Partnership Unit [Abstract] LEASING ACTIVITIES Leases of Lessor Disclosure [Text Block] Leasing Activities [Abstract] Leasing Activities [Abstract] TRANSACTIONS WITH DEL TACO Related Party Transactions Disclosure [Text Block] Transactions with Del Taco [Abstract] Transactions with Del Taco [Abstract] DISTRIBUTIONS Partners' Capital Notes Disclosure [Text Block] Distributions [Abstract] Distributions [Abstract] PAYABLE TO LIMITED PARTNERS Other Liabilities Disclosure [Text Block] Payable to Limited Partners [Abstract] Payable to Limited Partners [Abstract] CONCENTRATION OF RISK Concentration Risk Disclosure [Text Block] Concentration of Risk [Abstract] Concentration of Risk [Abstract] Amendment Flag Current Fiscal Year End Date Document Period End Date Document Type Entity Central Index Key Entity Filer Category Entity Registrant Name Document Fiscal Period Focus Document Fiscal Year Focus Condensed Balance Sheets [Abstract] Condensed Statements of Income [Abstract] Condensed Statements of Cash Flows [Abstract]