Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Schedule Of Marketable Securities) (Details)

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Marketable Securities (Schedule Of Marketable Securities) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Marketable Securities [Line Items]    
Cost $ 24,500 $ 13,250
Gross Unrealized Gains 0 0
Gross Unrealized Losses (34) (17)
Fair Value 24,466 13,233
Certificates Of Deposit
   
Marketable Securities [Line Items]    
Cost 24,500 13,250
Gross Unrealized Gains 0 0
Gross Unrealized Losses (34) (17)
Fair Value $ 24,466 $ 13,233