CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Income Statement [Abstract]
Net sales	$ 7,786,726	$ 6,222,812	$ 14,760,096	$ 12,385,112
Cost of goods sold	6,268,255	5,131,537	11,742,038	10,082,512
Gross profit	1,518,471	1,091,275	3,018,058	2,302,600
Operating expenses:
Sales and marketing	541,461	352,489	1,018,842	642,338
General and administrative	770,772	1,310,046	1,844,810	2,732,959
Total operating expenses	1,312,233	1,662,535	2,863,652	3,375,297
Income (loss) from operations	206,238	(571,260)	154,406	(1,072,697)
Other income (expense):
Interest income (expense)	(1,645)	6,928	(256)	49,055
Gain on marketable securities, net	85,846		328,217
Other income (expense), net	(3,514)	26,696	(14,182)	12,929
Total other income, net	80,687	33,624	313,779	61,984
Income (loss) from continuing operations before income tax expense	286,925	(537,636)	468,185	(1,010,713)
Income tax expense	432	1,534	507	1,315
Income (loss) from continuing operations	286,493	(539,170)	467,678	(1,012,028)
Loss from discontinued operations, net of tax of $2,055 and $3,120, and $2,975 and $4,979, respectively	(138,419)	(1,005,256)	(180,839)	(2,045,578)
Net income (loss)	148,074	(1,544,426)	286,839	(3,057,606)
Other comprehensive income (loss):
Change in unrealized gains on marketable securities			23,744
Translation adjustments	(14,816)	(5,028)	(9,201)	(4,112)
Comprehensive income (loss)	$ 133,258	$ (1,549,454)	$ 301,382	$ (3,061,718)
Net income (loss) per basic and diluted common share:
Income (loss) from continuing operations (in dollars per share)	$ 0.04	$ (0.07)	$ 0.06	$ (0.12)
Loss from discontinued operations (in dollars per share)	$ (0.02)	$ (0.12)	$ (0.02)	$ (0.25)
Net income (loss) per share (in dollars per share)	$ 0.02	$ (0.19)	$ 0.04	$ (0.38)
Weighted average number of common and common equivalent shares outstanding
Basic (in shares)	8,112,685	8,105,185	8,109,759	8,098,137
Diluted (in shares)	8,127,071	8,105,185	8,124,145	8,098,137