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Balance Sheet Components | 3 Months Ended
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Mar. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Balance Sheet Components | 5. Balance Sheet Components Inventory Inventory and Printed Circuit Board Assemblies (“PCBAs”), which are recorded as other assets as they are used many times over a period longer than one year on average, consisted of the following (in thousands):
|  | March 31, 2019 |  |  | December 31, 2018 |
Raw materials |  | $ | 968 |  |  | $ | 1,028 |
Finished goods |  |  | 4,661 |  |  |  | 3,565 |
Total |  | $ | 5,629 |  |  | $ | 4,593 |
Classified as: |  |  |  |  |  |  |  |
Inventory |  | $ | 2,504 |  |  | $ | 2,062 |
Other assets |  |  | 3,125 |  |  |  | 2,531 |
Total |  | $ | 5,629 |  |  | $ | 4,593 |
Amounts reported as other assets are comprised of the PCBA costs that are included in both raw materials and finished goods totals above. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands):
|  | March 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
Laboratory and manufacturing equipment |  | $ | 3,120 |  |  | $ | 2,750 |
Computer equipment and software |  |  | 1,062 |  |  |  | 1,062 |
Furniture and fixtures |  |  | 925 |  |  |  | 925 |
Leasehold improvements |  |  | 726 |  |  |  | 726 |
Internal-use software |  |  | 10,228 |  |  |  | 8,925 |
Total property and equipment, gross |  |  | 16,061 |  |  |  | 14,388 |
Less: accumulated depreciation and amortization |  |  | (5,853 | ) |  |  | (5,230 | )
Total property and equipment, net |  | $ | 10,208 |  |  | $ | 9,158 |
Depreciation and amortization expense was $0.6 million and $0.5 million for the three months ended March 31, 2019 and 2018, respectively. Accrued Liabilities Accrued liabilities consisted of the following (in thousands):
|  | March 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
Accrued vacation |  | $ | 3,404 |  |  | $ | 2,825 |
Accrued payroll and related expenses |  |  | 8,443 |  |  |  | 18,188 |
Accrued ESPP contributions |  |  | 1,530 |  |  |  | 352 |
Accrued professional services fees |  |  | 867 |  |  |  | 1,243 |
Claims payable |  |  | 3,420 |  |  |  | 2,374 |
Other |  |  | 2,435 |  |  |  | 1,588 |
Total accrued liabilities |  | $ | 20,099 |  |  | $ | 26,570 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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