Organization And Accounting Policies (Rollforward Analysis Of The Allowance Against Accounts Receivable Balance) (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Balance at beginning of year | $ (2,535) | $ (7,033) |
| Bad debt recovery | 29 | 56 |
| Adjustment associated with settlement of customs audit | 623 | |
| Foreign currency gain (loss) | 29 | (187) |
| Balance at end of period | (1,854) | (7,164) |
| Gabon | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Bad debt recovery | $ 32 | $ 100 |
| X | ||||||||||
- Definition Allowance For Bad Debts, Foreign Currency Gain No definition available.
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- Definition Allowance For Doubtful Accounts Receivable, Adjustment Related To Customs Audit No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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