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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 67,360 | $ 16,466
Short term investments | 0 | 61,678
Trade accounts receivable, net of allowance of $285 and $428 | 6,218 | 5,015
Inventories, net of provision for obsolescence of $402 and $439 | 6,392 | 5,212
Prepaid expenses and other current assets | 1,987 | 1,146
Total current assets | 81,957 | 89,517
Property and equipment, net | 6,300 | 5,788
Intangibles | 185 | 191
Deposits | 73 | 73
Other assets | 368 | 41
Total assets | 88,883 | 95,610
Current liabilities: |  |
Accounts payable | 1,641 | 1,423
Accrued and other liabilities | 5,848 | 5,552
Accrued severance and related | 408 | 727
Total current liabilities | 7,897 | 7,702
Note payable | 140 | 140
Long term lease liability | 267 |
Total liabilities | 8,304 | 7,842
STOCKHOLDERS’ EQUITY |  |
Common stock, $0.001 par value; 75,000,000 shares authorized; 33,847,100 issued and 33,704,525 outstanding as of December 31, 2018, and 34,061,360 issued and 33,918,785 outstanding as of June 30, 2019 | 34 | 34
Additional paid-in capital | 54,051 | 52,221
Retained earnings | 26,494 | 35,513
Total stockholders’ equity | 80,579 | 87,768
Total liabilities and stockholders’ equity | $ 88,883 | $ 95,610

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