Organization And Accounting Policies (Rollforward Analysis Of The Allowance Against Accounts Receivable Balance) (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Organization And Accounting Policies [Abstract] | ||
| Balance at beginning of year | $ (7,033) | $ (5,211) |
| Recovery (charge) to costs and expenses | 56 | (98) |
| Foreign currency loss | (187) | (90) |
| Balance at end of period | $ (7,164) | $ (5,399) |
| X | ||||||||||
- Definition Allowance For Bad Debts, Foreign Currency Gain No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/presentationRef
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