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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2023
Sep. 30, 2022
ASSETS    
Cash and cash equivalents $ 6,371 $ 12,736
Short-term marketable securities 5,552 6,397
Restricted cash 739 100
Accounts receivable, net of allowance for doubtful accounts of $181 3,623 6,744
Inventories, net 9,387 6,008
Prepaid expenses and other 1,613 3,577
Total current assets 27,285 35,562
Long-term marketable securities 601 781
Long-term restricted cash 96 823
Deferred tax assets, net 7,373 7,373
Property and equipment, net 1,704 1,757
Goodwill 10,346 10,118
Intangible assets, net 9,483 10,505
Operating lease right of use assets 4,284 4,541
Other assets 530 394
Total assets 61,702 71,854
Current liabilities:    
Accounts payable 3,512 2,334
Accrued liabilities 7,443 12,083
Operating lease liabilities, current portion 983 948
Total current liabilities 11,938 15,365
Other liabilities, noncurrent 159 907
Operating lease liabilities, noncurrent 4,803 5,189
Total liabilities 16,900 21,461
Stockholders' equity:    
Preferred stock, $0.00001 par value; 5,000,000 shares authorized; none issued and outstanding 0 0
Common stock, $0.00001 par value; 100,000,000 shares authorized; 36,984,295 and 36,611,240 shares issued and outstanding, respectively 0 0
Additional paid-in capital 109,523 108,551
Accumulated deficit (64,276) (57,366)
Accumulated other comprehensive income (loss) (445) (792)
Total stockholders' equity 44,802 50,393
Total liabilities and stockholders' equity $ 61,702 $ 71,854