Consolidated Balance Sheets - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Current assets:
Cash and cash equivalents	$ 18,819,078	$ 11,063,091
Short-term marketable securities	3,695,364	3,592,175
Restricted cash	263,136	403,427
Accounts receivable, net	3,644,059	2,785,997
Inventories, net	5,835,163	6,734,183
Prepaid expenses and other	1,781,837	3,091,401
Total current assets	34,038,637	27,670,274
Long-term marketable securities	1,384,819	1,200,541
Long-term restricted cash	434,704	339,556
Deferred tax assets, net	5,387,000	5,957,000
Property and equipment, net	2,269,506	2,448,725
Goodwill	2,305,750	2,445,990
Intangible assets, net	1,175,634	1,557,346
Other assets	123,933	241,365
Total assets	47,119,983	41,860,797
Current liabilities:
Accounts payable	859,530	3,083,344
Accrued liabilities	8,134,341	3,199,864
Notes payable, current portion	279,588	296,594
Total current liabilities	9,273,459	6,579,802
Notes payable, less current portion	32,903	52,358
Other liabilities, noncurrent	2,432,272	1,739,430
Total liabilities	11,738,634	8,371,590
Stockholders' equity:
Preferred stock, $0.00001 par value; 5,000,000 shares authorized; none issued and outstanding
Common stock, $0.00001 par value; 50,000,000 shares authorized; 32,949,987 and 33,176,146 shares issued and outstanding, respectively	330	332
Additional paid-in capital	89,571,641	90,251,145
Accumulated deficit	(53,731,903)	(56,516,895)
Accumulated other comprehensive loss	(458,719)	(245,375)
Total stockholders' equity	35,381,349	33,489,207
Total liabilities and stockholders' equity	$ 47,119,983	$ 41,860,797