Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidated Statements of Operations
Sales (including excise taxes of $87.4 million and $85.7 million and $184.4 million and $183.1 million, respectively)	$ 287,443,864	$ 272,421,788	$ 602,877,340	$ 578,047,345
Cost of sales	269,710,529	254,801,826	565,617,473	540,786,320
Gross profit	17,733,335	17,619,962	37,259,867	37,261,025
Selling, general and administrative expenses	15,485,757	15,812,174	31,666,879	32,304,437
Depreciation and amortization	590,857	628,834	1,167,162	1,252,874
Total operating expenses	16,076,614	16,441,008	32,834,041	33,557,311
Operating income	1,656,721	1,178,954	4,425,826	3,703,714
Other expense (income):
Interest expense	194,375	222,624	431,517	524,619
Other (income), net	(35,987)	(38,955)	(43,054)	(69,186)
Total other expenses (income)	158,388	183,669	388,463	455,433
Income from operations before income tax expense	1,498,333	995,285	4,037,363	3,248,281
Income tax expense	729,000	464,000	1,722,000	1,429,000
Net income	769,333	531,285	2,315,363	1,819,281
Preferred stock dividend requirements	(48,108)	(48,108)	(97,285)	(97,285)
Net income available to common shareholders	$ 721,225	$ 483,177	$ 2,218,078	$ 1,721,996
Basic earnings per share available to common shareholders: (in dollars per share)	$ 1.17	$ 0.79	$ 3.61	$ 2.79
Diluted earnings per share available to common shareholders: (in dollars per share)	$ 1.04	$ 0.72	$ 3.15	$ 2.46
Basic weighted average shares outstanding (in shares)	615,822	611,432	614,173	616,888
Diluted weighted average shares outstanding (in shares)	737,180	737,461	735,599	739,223