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Supplemental Cash Flow And Non-Cash Information (Schedule Of Supplemental Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash Flow Non-cash Investing And Financing Activities Disclosure [Abstract] |  |  |
Additions to property, plant and equipment in accounts payable | $ 9,113 us-gaap_CapitalExpendituresIncurredButNotYetPaid | $ 3,170 us-gaap_CapitalExpendituresIncurredButNotYetPaid | $ 2,020 us-gaap_CapitalExpendituresIncurredButNotYetPaid
Supplemental Cash Flow Information [Abstract] |  |  |
Income taxes paid, net | 5,821 us-gaap_IncomeTaxesPaidNet | 62 us-gaap_IncomeTaxesPaidNet | 11,975 us-gaap_IncomeTaxesPaidNet
Interest paid | $ 1,717 us-gaap_InterestPaidNet | $ 1,757 us-gaap_InterestPaidNet | $ 1,353 us-gaap_InterestPaidNet

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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- Definition The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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