Condensed Consolidated Statements of Partners' Capital (Unaudited) - USD ($)	General Partner [Member]	Limited Partner [Member]	AOCI Attributable to Parent [Member]	Total
Partners’ capital at Dec. 31, 2013	$ 38,547,000		$ 37,000	$ 38,584,000
Partners’ capital at beginning of period:
Allocation of net income (loss)		$ (4,653,000)		(4,653,000)
Units issued for cash:
				8,880,000
Change in pension and severance obligations			5,000	5,000
Partners’ capital at end of period at Sep. 30, 2014	42,774,000		42,000	42,816,000
Partners’ capital at Jun. 30, 2014	44,195,000		40,000	44,235,000
Partners’ capital at beginning of period:
Allocation of net income (loss)		(1,421,000)		$ (1,421,000)
Units issued for cash:
Change in pension and severance obligations			2,000	$ 2,000
Partners’ capital at end of period at Sep. 30, 2014	42,774,000		42,000	42,816,000
Partners’ capital at Dec. 31, 2014	41,234,000		(186,000)	41,048,000
Partners’ capital at beginning of period:
Allocation of net income (loss)		(803,000)		$ (803,000)
Units issued for cash:
Change in pension and severance obligations			5,000	$ 5,000
Partners’ capital at end of period at Sep. 30, 2015	40,431,000		(181,000)	40,250,000
Partners’ capital at Jun. 30, 2015	40,647,000		(183,000)	40,464,000
Partners’ capital at beginning of period:
Allocation of net income (loss)		$ (216,000)		(216,000)
Units issued for cash:
				0
Change in pension and severance obligations			2,000	2,000
Partners’ capital at end of period at Sep. 30, 2015	$ 40,431,000		$ (181,000)	$ 40,250,000