CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Operating activities:
Net income (loss)	$ 138,765	$ (1,513,180)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Realized gain on sales of marketable securities	(242,371)
Share-based compensation	103,298	137,165
Provision for doubtful accounts	32,648
Depreciation and amortization	17,248	30,305
Provision for obsolete inventory	(7,095)
Changes in operating assets and liabilities:
Accounts receivable	2,630,562	(2,353,536)
Inventories	91,501	(1,084,473)
Prepaid expenses and other current assets	253,613	(1,017,980)
Accounts payable	(2,495,935)	1,136,520
Accrued expenses and other current liabilities	(813,228)	646,220
Net cash used in operating activities	(290,994)	(4,018,959)
Investing activities:
Purchases of marketable securities	(6,069,625)
Proceeds from sales of marketable securities	5,456,984
Purchases of property and equipment	(8,111)	(58,543)
Proceeds from note receivable		250,000
Net cash (used in) provided by investing activities	(620,752)	191,457
Net decrease in cash and cash equivalents	(911,746)	(3,827,502)
Cash and cash equivalents at beginning of period	4,608,246	14,911,844
Cash and cash equivalents at end of period	3,696,500	11,084,342
Cash paid for:
Income taxes	$ 100