Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements of Operations
Sales (including excise taxes of $87.2 million and $86.1 million, and $185.2 million and $176.6 million, respectively)	$ 274,568,151	$ 275,829,266	$ 576,786,472	$ 559,392,316
Cost of sales	256,271,131	256,612,867	539,259,663	521,538,240
Gross profit	18,297,020	19,216,399	37,526,809	37,854,076
Selling, general and administrative expenses	15,438,195	15,901,755	31,286,667	31,251,757
Depreciation and amortization	599,785	613,927	1,193,647	1,227,421
Total operating expenses	16,037,980	16,515,682	32,480,314	32,479,178
Operating income	2,259,040	2,700,717	5,046,495	5,374,898
Other expense (income):
Interest expense	248,992	319,841	565,044	743,951
Other (income), net	(114,846)	(93,874)	(176,195)	(245,138)
Total other expenses (income)	134,146	225,967	388,849	498,813
Income from operations before income tax expense	2,124,894	2,474,750	4,657,646	4,876,085
Income tax expense	911,000	1,010,000	1,981,000	1,973,000
Net income	1,213,894	1,464,750	2,676,646	2,903,085
Preferred stock dividend requirements	(48,108)	(66,906)	(107,399)	(134,547)
Net income available to common shareholders	$ 1,165,786	$ 1,397,844	$ 2,569,247	$ 2,768,538
Basic earnings per share available to common shareholders (in dollars per share)	$ 1.87	$ 2.26	$ 4.13	$ 4.47
Diluted earnings per share available to common shareholders (in dollars per share)	$ 1.63	$ 1.87	$ 3.55	$ 3.70
Basic weighted average shares outstanding (in shares)	623,115	619,480	622,692	619,705
Diluted weighted average shares outstanding (in shares)	743,195	784,429	754,881	785,281