|
Short-Term And Long-Term Investments And Restricted Deposits (Gross Recorded Realized Gains And Losses On Investments) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Investments, Debt and Equity Securities [Abstract] | |||
| Gains | $ 1,509 | $ 314 | $ 6,036 |
| Losses | (25) | (27) | (270) |
| Impairment of investment | 0 | 0 | (5,531) |
| Net realized gains (losses) | $ 1,484 | $ 287 | $ 235 |
| X | ||||||||||
|
- Definition
This item represents the total realized gains included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity. No definition available.
|
| X | ||||||||||
|
- Definition
This item represents the total realized losses included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity. No definition available.
|
| X | ||||||||||
|
- Definition
The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity. No definition available.
|