Organization and Accounting Policies (Rollforward Analysis of the Allowance Against Accounts Receivable Balance) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
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| Organization and Accounting Policies [Abstract] | ||||
| Balance at beginning of year | $ (1,854) | $ (7,164) | $ (2,535) | $ (7,033) |
| Bad debt (recovery) expense | (5) | (145) | 24 | (89) |
| Adjustment associated with settlement of customs audit | 623 | |||
| Foreign currency gain (loss) | (17) | 361 | 12 | 174 |
| Balance at end of period | $ (1,876) | $ (6,948) | $ (1,876) | $ (6,948) |
| 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 Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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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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