Quarterly report pursuant to Section 13 or 15(d)

Fair Value Of Measurements (Schedule Of Assets And Liabilities Measured On A Nonrecurring Basis) (Details)

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Fair Value Of Measurements (Schedule Of Assets And Liabilities Measured On A Nonrecurring Basis) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets fair value $ 10,729 $ 10,132
Liabilities fair value $ 25 1,297
Nonrecurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets fair value   0
Liabilities fair value   0
Goodwill  
Goodwill, Losses $ 29,507  
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets fair value $ 9,824 $ 9,910
Liabilities fair value
Level 1 [Member] | Nonrecurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill  
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets fair value $ 905 $ 222
Liabilities fair value $ 25 $ 1,297
Level 2 [Member] | Nonrecurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill  
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets fair value
Liabilities fair value
Level 3 [Member] | Nonrecurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Goodwill