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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 10,292 | $ 14,456
Restricted cash | 779 | 779
Trade accounts receivable, net of allowance of $186 and $118 | 4,929 | 4,733
Inventories, net | 7,582 | 6,158
Prepaid expenses and other current assets | 538 | 413
Total current assets | 24,120 | 26,539
Property and equipment, net | 6,240 | 6,449
Brand name and trademark | 1,510 | 1,510
Purchased technology and license rights, net | 217 | 215
Goodwill | 185 | 185
Deposits | 66 | 109
Other assets | 218 | 103
Total assets | 32,556 | 35,110
Current liabilities: |  |
Accounts payable | 2,077 | 1,606
Accrued payroll | 416 | 419
Accrued vacation | 375 | 404
Current portion of mortgage note payable | 239 | 239
Accrued and other liabilities | 2,511 | 2,604
Total current liabilities | 5,618 | 5,272
Mortgage note payable, net of current portion | 2,575 | 2,694
Note payable | 140 | 140
Deferred rents | 11 | 14
Deferred tax liability | 564 | 564
Derivative liabilities | 77 | 203
Total liabilities | 8,985 | 8,887
STOCKHOLDERS' EQUITY |  |
Series B convertible preferred stock, $0.001 par value; 3,588,139 authorized and 975,639 issued and outstanding as of June 30, 2017 and December 31, 2016 | 1 | 1
Common stock, $0.001 par value; 40,000,000 shares authorized; 31,002,832 issued and 30,859,753 outstanding as of June 30, 2017 and December 31, 2016 | 31 | 31
Additional paid-in capital | 49,966 | 49,625
Accumulated deficit | (26,427) | (23,434)
Total stockholders' equity | 23,571 | 26,223
Total liabilities and stockholders' equity | $ 32,556 | $ 35,110

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- Definition Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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