CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (Unaudited) Statement - USD ($) $ in Thousands	Total	LCIF [Member]
Beginning balance (in units) at Dec. 31, 2015		83,241,396
Beginning balance at Dec. 31, 2015		$ 461,657
Increase (Decrease) in Partners' Capital [Roll Forward]
Changes in co-borrower debt allocation		(21,505)
Distributions		(32,986)
Net income	$ 107,133	$ 40,781
Ending balance (in units) at Jun. 30, 2016		83,241,396
Ending balance at Jun. 30, 2016		$ 447,947
Beginning balance (in units) at Dec. 31, 2016		83,241,396
Beginning balance at Dec. 31, 2016		$ 387,623
Increase (Decrease) in Partners' Capital [Roll Forward]
Changes in co-borrower debt allocation		43,239
Distributions		(33,832)
Net income	$ 49,585	$ (478)
Ending balance (in units) at Jun. 30, 2017	3,245,000	83,241,396
Ending balance at Jun. 30, 2017		$ 396,552