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Debt And Liquidity (Schedule of Short-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Short-term Debt [Line Items] |  |
Total Short-Term Debt | $ 191,446 us-gaap_LongTermDebtCurrent | $ 188,104 us-gaap_LongTermDebtCurrent
Senior Subordinated Notes |  |
Short-term Debt [Line Items] |  |
Total Short-Term Debt | 191,314 us-gaap_LongTermDebtCurrent / us-gaap_ShortTermDebtTypeAxis = us-gaap_SeniorSubordinatedNotesMember | 187,973 us-gaap_LongTermDebtCurrent / us-gaap_ShortTermDebtTypeAxis = us-gaap_SeniorSubordinatedNotesMember
Other debt |  |
Short-term Debt [Line Items] |  |
Total Short-Term Debt | $ 132 us-gaap_LongTermDebtCurrent / us-gaap_ShortTermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember | $ 131 us-gaap_LongTermDebtCurrent / us-gaap_ShortTermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember

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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_ShortTermDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_SeniorSubordinatedNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |