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Rental And Lease Information (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Rental and Lease Information [Abstract] |  |  |
Rent Expense | $ 3,062 us-gaap_LeaseAndRentalExpense | $ 3,333 us-gaap_LeaseAndRentalExpense | $ 3,762 us-gaap_LeaseAndRentalExpense
Sale Leaseback Transaction, Cumulative Gain Recognized |  |  | 577 us-gaap_SaleLeasebackTransactionCumulativeGainRecognized1
Sale Leaseback Transaction, Current Period Gain Recognized | $ 0 us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized | $ 0 us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized | $ 456 us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition Cumulative amount of gain recognized (out of deferred gain) as income or a reduction in rent expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35688829&loc=d3e50609-112754 + Details
Name: | us-gaap_SaleLeasebackTransactionCumulativeGainRecognized1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The portion of the deferred gain that was recognized in the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35688829&loc=d3e50609-112754 + Details
Name: | us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration