Investments In Marketable Securities (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Marketable Securities [Abstract] | |||
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax | $ 11,415 | $ 8,562 | |
Dividend Income On Marketable Securities | $ 716 | $ 667 | $ 628 |