Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Sep. 30, 2013
Current assets:
Cash	$ 23,894,744	$ 15,805,195
Accounts receivable, less allowance of $0 and $3,772 for doubtful accounts	4,284,051	4,958,532
Inventories, net	3,895,736	4,587,750
Prepaid expenses and other	523,947	1,003,875
Total current assets	32,598,478	26,355,352
Property and equipment, net	360,084	237,377
Intangible assets, net	53,835	51,650
Prepaid expenses and other - noncurrent	766,423	914,516
Total assets	33,778,820	27,558,895
Current liabilities:
Accounts payable	830,503	1,596,409
Accrued liabilities	4,087,976	1,054,968
Total current liabilities	4,918,479	2,651,377
Other liabilities - noncurrent	157,550	146,109
Total liabilities	5,076,029	2,797,486
Stockholders' equity:
Common stock, $0.00001 par value; 50,000,000 shares authorized; 33,236,489 and 32,900,705 shares issued and outstanding, respectively	332	329
Additional paid-in capital	88,049,125	87,434,834
Accumulated deficit	(59,346,666)	(62,673,754)
Total stockholders' equity	28,702,791	24,761,409
Total liabilities and stockholders' equity	$ 33,778,820	$ 27,558,895