Condensed Consolidated Statements of Partners’ Capital (Unaudited) (USD $) In Thousands, unless otherwise specified	Accumulated Other Comprehensive Income (Loss) [Member]	General Partner [Member]	Limited Partner [Member]	Total
Partners’ capital at beginning of period at Mar. 31, 2013	$ (358)	$ 81	$ 41,508	$ 41,231
Allocation of net loss:
Allocation of net loss			(1,151)	(1,151)
Other comprehensive income:
Change in pension and severance obligations				7
				7
Partners’ capital at end of period at Jun. 30, 2013	(351)	81	40,357	40,087
Partners’ capital at beginning of period at Dec. 31, 2012	(365)	81	42,286	42,002
Allocation of net loss:
Allocation of net loss			(1,779)	(1,779)
Cash distributions:
Cash distributions			(150)	(150)
Other comprehensive income:
Change in pension and severance obligations				14
				14
Partners’ capital at end of period at Jun. 30, 2013	(351)	81	40,357	40,087
Partners’ capital at beginning of period at Dec. 31, 2013	37	81	38,466	38,584
Allocation of net loss:
Allocation of net loss			(3,232)	(3,232)
Units issued for cash:
Units issued for cash			8,880	8,880
Other comprehensive income:
Change in pension and severance obligations				3
				3
Partners’ capital at end of period at Jun. 30, 2014	40	81	44,114	44,235
Partners’ capital at beginning of period at Mar. 31, 2014	39	81	47,093	47,213
Allocation of net loss:
Allocation of net loss			(2,979)	(2,979)
Other comprehensive income:
Change in pension and severance obligations				1
				1
Partners’ capital at end of period at Jun. 30, 2014	$ 40	$ 81	$ 44,114	$ 44,235