Consolidated Statements of Partners' Capital - USD ($) $ in Thousands	General Partner [Member]	Limited Partner [Member]	AOCI Attributable to Parent [Member]	Total
Partners’ capital at Dec. 31, 2013	$ 38,547		$ 37	$ 38,584
Partners’ capital at Dec. 31, 2013	38,547		37	38,584
Accumulated other comprehensive loss
Allocation of net income (loss)		$ (6,193)		(6,193)
Units issued for cash:
Class A limited partner units (3,600 units), net of fees of $300		$ 8,880
Class A limited partners
Change in pension and severance obligations			(223)	(223)
Partners’ capital at Dec. 31, 2014	41,234		(186)	41,048
Partners’ capital at Dec. 31, 2014	41,234		(186)	41,048
Accumulated other comprehensive loss
Allocation of net income (loss)		$ (2,192)		(2,192)
Units issued for cash:
Class A limited partner units (3,600 units), net of fees of $300
Class A limited partners
Change in pension and severance obligations			(135)	(135)
Partners’ capital at Dec. 31, 2015	$ 39,042		$ (321)	$ 38,721