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Balance Sheet Components (Tables) | 9 Months Ended
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Sep. 30, 2021
Balance Sheet Components |
Schedule of property and equipment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ | Useful Life | 2021 |  | 2020
​ | ​ | (in thousands)
Machinery and equipment | 3-5 years | $ | 64,583 | ​ | $ | 51,001
Furniture and fixtures | 3 years | ​ | 1,393 | ​ |  | 1,376
Computer equipment | 3 years | ​ | 2,772 | ​ |  | 2,428
Capitalized software held for internal use | 3 years | ​ | 8,776 | ​ | ​ | 7,417
Leasehold improvements | Lesser of useful life or lease term | ​ | 15,351 | ​ |  | 14,810
Construction-in-process | ​ | ​ | 24,732 | ​ |  | 6,370
​ | ​ | ​ | 117,607 | ​ |  | 83,402
Less: Accumulated depreciation and amortization | ​ | ​ | (58,314) | ​ |  | (50,054)
Total Property and Equipment, net | ​ | $ | 59,293 | ​ | $ | 33,348
Schedule of accrued compensation | ​
​ | ​ | ​ | ​ | ​ | ​
​ | September 30, |  | December 31,
​ | 2021 |  | 2020
​ | (in thousands)
Accrued paid time off | $ | 2,472 | ​ | $ | 2,260
Accrued commissions |  | 10,950 | ​ |  | 12,686
Accrued bonuses |  | 12,275 | ​ |  | 9,635
Other accrued compensation |  | 9,634 | ​ |  | 5,790
Total accrued compensation | $ | 35,331 | ​ | $ | 30,371
Schedule of other accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​
​ | September 30, |  | December 31,
​ | 2021 |  | 2020
​ | (in thousands)
Reserves for refunds to insurance carriers | $ | 15,879 | ​ | $ | 17,366
Accrued charges for third-party testing | ​ | 17,690 | ​ | ​ | 5,141
Testing and laboratory materials from suppliers | ​ | 6,513 | ​ | ​ | 2,720
Marketing and corporate affairs | ​ | 6,152 | ​ | ​ | 3,325
Legal, audit and consulting fees | ​ | 15,215 | ​ |  | 4,189
Accrued shipping charges | ​ | 399 | ​ | ​ | 1,604
Sales tax payable | ​ | 1,758 | ​ | ​ | 1,723
Accrued third-party service fees | ​ | 3,363 | ​ | ​ | 2,355
Clinical trials and studies |  | 6,282 | ​ | ​ | 2,353
Operating lease liabilities, current portion | ​ | 6,922 | ​ | ​ | 7,300
Fixed asset purchases | ​ | 4,957 | ​ | ​ | 1,691
Other accrued interest | ​ | 2,695 | ​ | ​ | 1,078
Other accrued expenses |  | 8,661 | ​ | ​ | 9,562
Total other accrued liabilities | $ | 96,486 | ​ | $ | 60,407
Summary of reserve balance and activities for refunds to insurance carriers | ​
​ | ​ | ​ | ​ | ​ | ​
​ | September 30, |  | September 30,
​ | 2021 |  | 2020
​ | (in thousands)
Beginning balance | $ | 17,366 | ​ | $ | 9,410
Additional reserves |  | 11,776 | ​ |  | 11,912
Refunds to carriers |  | (8,664) | ​ | ​ | (5,244)
Reserves released to revenue | ​ | (4,599) | ​ | ​ | (2,756)
Ending balance | $ | 15,879 | ​ | $ | 13,322
​ | ​ | ​ | ​ | ​ | ​

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