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Balance Sheet Details | 12 Months Ended
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Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Balance Sheet Details | 5. Balance Sheet Details Inventory consisted of the following (in thousands):
|  | December 31, |
|  | 2018 |  |  | 2017 |
Finished goods |  | $ | 1,110 |  |  | $ | 1,164 |
Raw material |  |  | 2,477 |  |  |  | 4,084 |
Work in process |  |  | 483 |  |  |  | — |
|  | $ | 4,070 |  |  | $ | 5,248 |
Property and equipment, net, consisted of the following (in thousands):
|  | December 31, |
|  | 2018 |  |  | 2017 |
Machinery and equipment |  | $ | — |  |  | $ | 1,076 |
Computers and software |  |  | 3,745 |  |  |  | 2,868 |
Leasehold improvements |  |  | 1,655 |  |  |  | 1,642 |
Furniture and fixtures |  |  | 2,114 |  |  |  | 1,305 |
Construction-in-process |  |  | — |  |  |  | — |
|  |  | 7,514 |  |  |  | 6,891 |
Accumulated depreciation |  |  | (4,205 | ) |  |  | (4,229 | )
|  | $ | 3,309 |  |  | $ | 2,662 |
Depreciation of property and equipment was $1.5 million, $1.2 million, and $0.8 million for the years ended December 31, 2018, 2017, and 2016, respectively. During 2018, 2017 and 2016, the Company retired $1.6 million, $0.4 million, and $0.2 million, respectively, of fully depreciated property and equipment. Accrued liabilities consisted of the following (in thousands):
|  | December 31, |
|  | 2018 |  |  | 2017 |
Accrued consulting and professional fees |  | $ | 19,325 |  |  | $ | 9,395 |
Accrued compensation and benefits |  |  | 17,028 |  |  |  | 15,260 |
Accrued research and development services |  |  | 10,367 |  |  |  | 9,487 |
Accrued sales allowances |  |  | 5,849 |  |  |  | 3,591 |
Other |  |  | 3,829 |  |  |  | 2,511 |
|  | $ | 56,398 |  |  | $ | 40,244 |

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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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