Condensed Consolidated Statements of Partners' Capital (USD $) In Thousands, unless otherwise specified	Total	Accumulated other comprehensive income (loss)	General partner	Class A limited partners
Balance at Dec. 31, 2012	$ 42,002	$ (365)	$ 81	$ 42,286
Allocation of net loss:
Allocation of net loss:	(628)			(628)
Cash distributions:
Cash distributions:	(150)			(150)
Other comprehensive income:
Change in pension and severance obligations	7	7
Balance at Mar. 31, 2013	41,231	(358)	81	41,508
Balance at Dec. 31, 2013	38,584	37	81	38,466
Allocation of net loss:
Allocation of net loss:	(253)			(253)
Units issued for cash:
Class A limited partner units (3,600 units), net of fees of $300	8,880			8,880
Other comprehensive income:
Change in pension and severance obligations	2	2
Balance at Mar. 31, 2014	$ 47,213	$ 39	$ 81	$ 47,093