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Balance Sheet Details | 12 Months Ended
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Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract] |
Balance Sheet Details | Balance Sheet Details Inventories Inventories consisted of the following:
|  | As of December 31, |
(In thousands) |  | 2021 |  | 2020 |
Raw materials |  | $ | 3,879 |  |  | $ | 7,945 |  |
Work in process |  | 1,536 |  |  | 650 |  |
Finished goods |  | 3,067 |  |  | 5,871 |  |
Total |  | $ | 8,482 |  |  | $ | 14,466 |  |
Property, Plant and Equipment, net Property, plant and equipment, net is comprised of the following:
|  | As of December 31,
(In thousands) |  | 2021 |  | 2020
Computer software |  | $ | 51,922 |  |  | $ | 49,862 |
Computer equipment |  | 34,484 |  |  | 32,122 |
Leasehold improvements |  | 34,120 |  |  | 9,658 |
Machinery |  | 14,840 |  |  | 10,378 |
Furniture and fixtures |  | 13,328 |  |  | 11,100 |
Construction in progress |  | 1,813 |  |  | 27,250 |
Property, plant and equipment, gross |  | 150,507 |  |  | 140,370 |
Less accumulated depreciation and amortization |  | (94,472) |  |  | (82,677) |
Property, plant and equipment, net |  | $ | 56,035 |  |  | $ | 57,693 |
Depreciation expense for the years ended December 31, 2021, 2020 and 2019 was $21.0 million, $22.1 million and $15.3 million, respectively. Accumulated Other Comprehensive Gain (Loss) Accumulated other comprehensive gain (loss) is comprised of the following:
|  | As of December 31,
(In thousands) |  | 2021 |  | 2020
Foreign currency translation adjustments |  | $ | (237) |  |  | $ | 129 |
Unrealized loss on available-for-sale securities, net of tax |  | (1,215) |  |  | (210) |
Total |  | $ | (1,452) |  |  | $ | (81) |

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