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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Dec. 31, 2020
Sep. 30, 2020
ASSETS    
Cash and cash equivalents $ 19,584 $ 23,319
Short-term marketable securities 5,517 4,265
Restricted cash 295 282
Accounts receivable, net 3,159 5,442
Inventories, net 6,963 5,949
Prepaid expenses and other 713 860
Total current assets 36,231 40,117
Long-term marketable securities 2,419 3,805
Long-term restricted cash 1,180 395
Deferred tax assets, net 11,100 11,095
Property and equipment, net 1,885 1,930
Goodwill 8,500 2,472
Intangible assets, net 3,743 943
Operating lease right of use asset 5,384 5,285
Other assets 161 125
Total assets 70,603 66,167
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 1,618 1,370
Accrued liabilities 7,848 7,880
Notes payable, current portion 314 300
Operating lease liabilities, current portion 848 771
Total current liabilities 10,628 10,321
Notes payable, less current portion 18 18
Other liabilities, noncurrent 915 293
Operating lease liabilities, noncurrent 6,385 6,395
Total liabilities 17,946 17,027
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; 33,587,443 and 33,561,544 shares issued and outstanding, respectively
Additional paid-in capital 94,915 91,248
Accumulated deficit (42,477) (41,858)
Accumulated other comprehensive income (loss) 219 (250)
Total stockholders' equity 52,657 49,140
Total liabilities and stockholders' equity $ 70,603 $ 66,167