Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating activities:
Net income	$ 271	$ 335	$ 434	$ 642
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation of operating lease assets	58	90	116	180
Reversal of provision for doubtful accounts			(1)
Gain on sales of assets	(11)	(32)	(33)	(70)
Changes in operating assets and liabilities:
Accounts receivable	8	(129)	31	(190)
Prepaid expenses and other assets	1	(4)	2	(4)
Accounts payable, General Partner	(4)	(26)	(45)	(68)
Accounts payable, other	14	(12)	16	(18)
Unearned operating lease income	(1)	7	1	4
Net cash provided by operating activities	336	229	521	476
Investing activities:
Proceeds from sale of assets	29	54	70	117
Net cash provided by investing activities	29	54	70	117
Net cash provided by financing activities
Net increase in cash and cash equivalents	365	283	591	593
Cash and cash equivalents at beginning of period	768	515	542	205
Cash and cash equivalents at end of period	1,133	798	1,133	798
Supplemental disclosures of cash flow information:
Cash paid during the period for taxes	$ 2	$ 3	$ 4	$ 3