Statements of Changes in Members' Capital (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Beginning Balance   $ 7,213 $ 7,292 $ 7,292
Distributions to Other Members       (3,390)
Distributions to Managing Member       (275)
Net income 680 1,526 3,264 3,586
Ending Balance 8,739 8,739   7,213
Other Members [Member]
        
Beginning Balance (in units)   13,560,188 13,560,188 13,560,188
Beginning Balance   7,213 7,292 7,292
Distributions to Other Members       (3,390)
Net income   1,526   3,311
Ending Balance (in units) 13,560,188 13,560,188   13,560,188
Ending Balance 8,739 8,739   7,213
Managing Member [Member]
        
Distributions to Managing Member       (275)
Net income       $ 275