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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Current assets    
Cash and cash equivalents $ 6,098 $ 6,120
Restricted cash 5 5
Accounts receivable, net 970 1,113
Inventories 881 866
Prepaid expenses and other current assets 337 392
Total current assets 8,291 8,496
Property, plant and equipment, net 364 407
Intangible assets, net 179 195
Right-of-use assets 272 334
Deferred tax assets 548 527
Other assets 64 63
Total assets 9,718 10,022
Current liabilities    
Accounts payable 286 235
Accrued liabilities 295 343
Lease liabilities, current 195 219
PPP loan payable   186
Accrued income taxes 53 59
Total current liabilities 829 1,042
Long term liabilities    
Lease liabilities, long term 99 140
Total long-term liabilities 99 140
Total liabilities 928 1,182
Commitments and contingencies (Note 9)
Stockholders' equity    
Common stock, $0.001 par value: 30,000,000 shares authorized, 6,600,893 shares issued and outstanding at March 31, 2021, and 6,600,550 shares issued and outstanding at December 31, 2020 7 7
Additional paid-in-capital 57,971 57,966
Accumulated other comprehensive income 25 37
Accumulated deficit (49,213) (49,170)
Total stockholders' equity 8,790 8,840
Total liabilities and stockholders' equity $ 9,718 $ 10,022