CONSOLIDATED AND CONDENSED STATEMENTS OF OPERATIONS (Unaudited) (Allocation of Net Income) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Limited partner interest:
Continuing operations	$ (645)	$ (25,162)	$ 18,366	$ (12,743)
Discontinued operations	0	(1,142)	736	(2,980)
Limited partners' interest in net income (loss)	(645)	(26,304)	19,102	(15,723)
General partner interest:
Continuing operations	3,959	(515)	11,836	(261)
Discontinued operations	0	(24)	474	(61)
General partners' interest in net income (loss)	$ 3,959	$ (539)	$ 12,310	$ (322)
Basic:
Continuing operations (in dollars per share)	$ (0.02)	$ (0.78)	$ 0.52	$ (0.44)
Discontinued operations (in dollars per share)	0.00	(0.04)	0.02	(0.10)
Net income (loss) per unit attributable to limited partners, basic (in dollars per share)	$ (0.02)	$ (0.82)	$ 0.54	$ (0.54)
Weighted average limited partner units - basic	35,307,583	32,242,571	35,308,990	29,271,205
Diluted:
Continuing operations (in dollars per share)	$ (0.02)	$ (0.78)	$ 0.52	$ (0.44)
Discontinued operations (in dollars per share)	0.00	(0.04)	0.02	(0.10)
Net income (loss) per unit attributable to limited partners, diluted (in dollars per share)	$ (0.02)	$ (0.82)	$ 0.54	$ (0.54)
Weighted average limited partner units - diluted	35,308,000	32,243,000	35,369,000	29,271,000