Statements of Changes in Members' Capital (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Beginning Balance	$ 5,704	$ 7,213	$ 7,213
Distributions to Members			(3,390)
Distributions to Managing Member			(275)
Net income	942	417	2,156
Ending Balance	6,646		5,704
Other Members [Member]
Beginning Balance (in units)	13,560,188	13,560,188	13,560,188
Beginning Balance	5,704	7,213	7,213
Distributions to Members			(3,390)
Net income	942		1,881
Ending Balance (in units)	13,560,188	13,560,188	13,560,188
Ending Balance	6,646		5,704
Managing Member [Member]
Distributions to Managing Member			(275)
Net income			275
Ending Balance