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Consolidated Balance Sheets - USD ($)
Sep. 30, 2018
Sep. 30, 2017
ASSETS    
Cash and cash equivalents $ 11,063,091 $ 12,764,421
Short-term marketable securities 3,592,175 4,359,542
Restricted cash 403,427
Accounts receivable, net 2,785,997 5,681,882
Inventories, net 6,734,183 5,257,234
Prepaid expenses and other 3,091,401 983,322
Total current assets 27,670,274 29,046,401
Long-term marketable securities 1,200,541 711,124
Long-term restricted cash 339,556 39,466
Deferred tax assets, net 5,957,000 8,331,000
Property and equipment, net 2,448,725 509,603
Goodwill 2,445,990
Intangible assets, net 1,557,346 55,689
Other assets 241,365 164,517
Total assets 41,860,797 38,857,800
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 3,083,344 1,112,366
Accrued liabilities 3,199,864 2,561,395
Notes payable, current portion 296,594
Total current liabilities 6,579,802 3,673,761
Notes payable, less current portion 52,358
Other liabilities, noncurrent 1,739,430
Total liabilities 8,371,590 3,673,761
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; 33,176,146 and 32,158,436 shares issued and outstanding, respectively 332 322
Additional paid-in capital 90,251,145 87,956,839
Accumulated deficit (56,516,895) (52,771,853)
Accumulated other comprehensive loss (245,375) (1,269)
Total stockholders' equity 33,489,207 35,184,039
Total liabilities and stockholders' equity $ 41,860,797 $ 38,857,800