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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Current assets:    
Cash, cash equivalents and restricted cash $ 27,399 $ 24,606
Accounts receivable, net of allowance for doubtful accounts of $24 and $34, as of March 31, 2024 and December 31, 2023, respectively 1,560 1,625
Contract assets 1,085 3,609
Note receivable 1,214 1,200
Inventories 1,923 2,029
Prepaid expenses and other current assets 2,128 1,561
Total current assets 35,309 34,630
Property and equipment, net 12,420 8,948
Capitalized internal-use software, net 2,147 2,069
Right of use assets, net 916 981
Intangible assets, net 510 537
Non-marketable equity investment 300 300
Goodwill 185 185
Other assets 142 142
TOTAL ASSETS 51,929 47,792
Current liabilities:    
Revolving line of credit 20,000 20,000
Trade payables 4,892 4,657
Accrued liabilities 1,545 2,673
Deferred revenue 778 1,052
Notes payable, current 993 946
Lease liabilities, current 263 302
Total current liabilities 28,471 29,630
Long-term liabilities:    
Lease liabilities, non-current 636 681
Notes payable, non-current 450 461
Other liabilities, non-current 125 125
Total liabilities 29,682 30,897
Commitments and contingencies (see Note 11)
Stockholders' equity:    
Preferred stock, $0.001 par value; 10,000 shares authorized; no shares issued and outstanding 0 0
Common stock, $0.001 par value; 200,000 authorized; 14,422 and 14,118 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively 14 14
Additional paid-in capital 327,680 322,436
Accumulated deficit (305,447) (305,555)
Total stockholders' equity 22,247 16,895
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 51,929 $ 47,792