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Industry, Segment, and Geographic Financial Information - Concentration (Details) - customer | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Top five customers |  |
Significant Customers and Vendors |  |
Number of customers | 5 | 5
Net sales | Customer concentration risk |  |
Significant Customers and Vendors |  |
Number of customers | 2 |
Net sales | SHI | Customer concentration risk |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 17.00% | 14.00%
Net sales | CDW | Customer concentration risk |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 18.00% | 24.00%
Net sales | Top five customers | Customer concentration risk |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 51.00% | 52.00%
Net accounts receivable | SHI | Customer concentration risk |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 22.00% | 9.00%
Net accounts receivable | CDW | Customer concentration risk |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 18.00% | 19.00%
Purchases | Vendor concentration risk | SolarWinds |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 10.00% | 12.00%
Purchases | Vendor concentration risk | Sophos |  |
Significant Customers and Vendors |  |
Percentage of concentration risk | 20.00% | 20.00%

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