|
Investments Investments (Investments Held to Maturity) (Details) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Gain (Loss) on Investments [Line Items] | ||
| Amortized Cost | $ 29,288 | $ 10,873 |
| Gross Unrealized Gain | 3 | 0 |
| Gross Unrealized (Loss) | (20) | (10) |
| Fair Value | 29,271 | 10,863 |
|
Current Assets [Member]
|
||
| Gain (Loss) on Investments [Line Items] | ||
| Amortized Cost | 11,421 | 2,832 |
| Gross Unrealized Gain | 3 | 0 |
| Gross Unrealized (Loss) | 0 | (1) |
| Fair Value | 11,424 | 2,831 |
|
Non Current Assets [Member]
|
||
| Gain (Loss) on Investments [Line Items] | ||
| Amortized Cost | 17,867 | 8,041 |
| Gross Unrealized Gain | 0 | 0 |
| Gross Unrealized (Loss) | (20) | (9) |
| Fair Value | $ 17,847 | $ 8,032 |