|
Consolidated Statements of Comprehensive Income (Parentheticals) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Auction Rate Securities [Member]
|
|||
| Change in unrealized losses on securities, tax | $ 0 | $ 0 | $ 0 |
|
Available-for-sale Securities [Member]
|
|||
| Change in unrealized losses on securities, tax | $ 0 | $ 0 | $ 0 |