Statements of Operations Statement - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues (Notes 2 and 7)	$ 26,292,741	$ 27,479,673	$ 82,171,442	$ 74,343,914
Cost of goods sold (Note 7)	26,373,459	25,741,335	77,923,482	75,195,236
Gross profit (loss)	(80,718)	1,738,338	4,247,960	(851,322)
General and administrative expenses	841,842	633,917	2,424,853	2,109,573
Operating income (loss)	(922,560)	1,104,421	1,823,107	(2,960,895)
Other income (expense):
Interest income	680	668	1,662	2,981
Interest expense	(38,943)	(26,749)	(68,317)	(53,822)
Other income (expense)	(38,263)	(26,081)	(66,655)	(50,841)
Net income (loss)	$ (960,823)	$ 1,078,340	$ 1,756,452	$ (3,011,736)
Weighted average units outstanding	42,049	42,049	42,049	42,049
Net income (loss) per unit - basic and diluted	$ (22.85)	$ 25.64	$ 41.77	$ (71.62)