Property, Plant and Equipment |
Estimated useful lives for property and equipment are as follows: | | | | | | | | | Property and Equipment | | Estimated Useful Life | | | | Machinery and equipment | | 3 – 5 years | Furniture and fixtures | | 7 years | Computer hardware and computer software | | 3 years | Leasehold improvements | | Lesser of estimated useful life or remaining lease term |
Property and equipment, net consist of the following: | | | | | | | | | | | | | As of December 31, | | 2021 | | 2020 | | | | | | (in thousands) | Machinery and equipment | $ | 63,022 | | | $ | 40,216 | | Leasehold improvements | 38,702 | | | 34,037 | | Computer hardware | 16,685 | | | 10,862 | | Construction in progress(1) | 55,873 | | | 7,833 | | Furniture and fixtures | 3,683 | | | 3,043 | | Computer software | 1,320 | | | 1,136 | | Property and equipment, gross | $ | 179,285 | | | $ | 97,127 | | Less: accumulated depreciation | (54,824) | | | (34,345) | | Property and equipment, net | $ | 124,461 | | | $ | 62,782 | |
(1) Under construction in progress, $45.8 million and $1.1 million was related to leasehold improvements, furniture and equipment for the office in Palo Alto, California, as of December 31, 2021 and 2020, respectively.
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Schedule of Accrued Liabilities |
Accrued expenses consist of the following: | | | | | | | | | | | | | As of December 31, | | 2021 | | 2020 | | | | | | (in thousands) | Operating lease liabilities | $ | 12,856 | | | $ | 6,632 | | Accrued tax liabilities | 4,223 | | | 4,634 | | Accrued professional services | 6,994 | | | 3,397 | | Accrued clinical studies | 3,332 | | | 1,264 | | Accrued legal expenses | 4,166 | | | 2,875 | | Purchases of property and equipment included in accrued expenses | 5,893 | | | 1,156 | | Others | 7,821 | | | 2,681 | | Total accrued expenses | $ | 45,285 | | | $ | 22,639 | |
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