Consolidated Statements of Partners' Capital (USD $) In Thousands, unless otherwise specified	Total	General partner	Class A limited partners	Accumulated other comprehensive loss	Comprehensive income (loss)
Balance at Dec. 31, 2008	$ 43,179	$ 81	$ 43,365	$ (267)
Allocation of net income (loss):
Allocation of net income (loss)	195		195		195
Accumulated other comprehensive loss
Change in pension and severance obligations	152			152	152
Comprehensive income (loss)					347
Balance at Dec. 31, 2009	43,526	81	43,560	(115)
Allocation of net income (loss):
Allocation of net income (loss)	(1,487)		(1,487)		(1,487)
Cash distributions paid and / or declared:
Cash distributions paid and / or declared	0
Accumulated other comprehensive loss
Change in pension and severance obligations	28			28	28
Comprehensive income (loss)					(1,459)
Balance at Dec. 31, 2010	42,067	81	42,073	(87)
Allocation of net income (loss):
Allocation of net income (loss)	712		712		712
Cash distributions paid and / or declared:
Cash distributions paid and / or declared	0
Accumulated other comprehensive loss
Change in pension and severance obligations	(242)			(242)	(242)
Comprehensive income (loss)					470
Balance at Dec. 31, 2011	$ 42,537	$ 81	$ 42,785	$ (329)