Summary of Significant Accounting Policies (Rollforward of Aggregate Allowance for Bad Debt) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Summary of Significant Accounting Policies [Abstract] | |||
| Balance at beginning of period | $ (1,508) | $ (2,535) | $ (7,033) |
| Bad debt charge | (1,165) | 341 | 77 |
| Adjustment associated with reversal of allowance on Mutamba | 593 | ||
| Adjustment associated with settlement of customs audit | 623 | ||
| Reclassification to leasehold costs related to signing bonus | 4,197 | ||
| Foreign currency gain | (193) | 63 | 224 |
| Balance at end of period | $ (2,273) | $ (1,508) | $ (2,535) |
| X | ||||||||||
- Definition Allowance For Bad Debts, Foreign Currency Gain No definition available.
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| X | ||||||||||
- Definition Allowance For Doubtful Accounts Receivable, Adjustment Related To Customs Audit No definition available.
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| X | ||||||||||
- Definition Allowance For Doubtful Accounts Receivable, Reclassification Related To Signing Bonus No definition available.
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| X | ||||||||||
- Definition Allowance For Doubtful Accounts Receivable Recovery Adjustments No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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