|
Available-for-Sale Investments (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Dec. 31, 2013
|
|
| Available-for-Sale Investments [Abstract] | |||||
| Accumulated other comprehensive income | $ 0 | $ 393 | |||
| Available-for-sale Securities, Gross Realized Gains | 541 | ||||
| Deferred Compensation Arrangement with Individual, Payment | $ 2,800 | $ 1,200 | $ 3,931 | $ 0 | |