Annual report pursuant to Section 13 and 15(d)

Commitments And Contingencies (Narrative) (Details)

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Commitments And Contingencies (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Commitments And Contingencies [Abstract]      
Total rent expense $ 2,354us-gaap_LeaseAndRentalExpense $ 2,321us-gaap_LeaseAndRentalExpense $ 1,944us-gaap_LeaseAndRentalExpense