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Business Segment Information (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) item segment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Business Segment Information |  |  |
Number of business activities | item | 1 |  |
Number of operating segments | segment | 1 |  |
Property and equipment, net | $ 68,969 | $ 24,008 | $ 22,056
Depreciation and amortization | 29,661 | 29,381 | 6,306
Capital expenditures | 47,785 | 6,935 | 4,725
United States |  |  |
Business Segment Information |  |  |
Property and equipment, net | 68,839 | 23,896 | 21,932
Depreciation and amortization | 29,622 | 29,306 | 6,273
Capital expenditures | 47,714 | 6,907 | 4,681
International |  |  |
Business Segment Information |  |  |
Property and equipment, net | 130 | 112 | 124
Depreciation and amortization | 39 | 75 | 33
Capital expenditures | $ 71 | $ 28 | $ 44

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