Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	$ (1,409)	$ (1,940)
Decrease related to adoption of ASU 2016-01 (See Note 16)	0
Other comprehensive income before reclassifications	(277)	434
Amounts reclassified from accumulated other comprehensive loss	(3)	0
Total change for the period	(324)	434
BALANCE	(1,733)	(1,506)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(1,394)	(1,928)
Other comprehensive income before reclassifications	(252)	414
Amounts reclassified from accumulated other comprehensive loss	0	0
Total change for the period	(252)	414
BALANCE	(1,646)	(1,514)
Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
BALANCE	(15)	(12)
Other comprehensive income before reclassifications	(25)	20
Amounts reclassified from accumulated other comprehensive loss	(3)	0
Total change for the period	(72)	20
BALANCE	(87)	$ 8
ASU No. 2016-09 [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Decrease related to adoption of ASU 2016-01 (See Note 16)	(44)
ASU No. 2016-09 [Member] \| Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Decrease related to adoption of ASU 2016-01 (See Note 16)	0
ASU No. 2016-09 [Member] \| Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Decrease related to adoption of ASU 2016-01 (See Note 16)	$ (44)

Amount of other comprehensive income, including prior period adjustment, net of tax.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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