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Significant Balance Sheet Components - Other Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Supplemental Balance Sheet Information [Abstract] |  |
Accrued expenses | $ 5,798 | $ 2,477
Accrued interest | 3,397 | 0
Accrued professional fees | 3,085 | 701
Accrued connectivity fees | 4,753 | 2,833
Operating lease liabilities, current portion | 3,856 | 2,580
Payable to Title365 noncontrolling interest holder under transition services agreement | 5,549 | 0
Other | 1,224 | 319
Total other current liabilities | $ 27,662 | $ 8,910
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Total other current liabilities | Total other current liabilities

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