|
Debt Short-term and Long-term Debt (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Debt Instrument [Line Items] | ||
| Senior Notes | $ 210,000 | $ 210,000 |
| Convertible Debt | 57,500 | 57,500 |
| Line of Credit Facility, Amount Outstanding | 62,000 | 59,200 |
| Other Long-term Debt | 993 | 1,257 |
| Long-term Debt, Gross | 330,493 | 327,957 |
| Long-term Debt, Unclassified [Abstract] | ||
| Less: unamortized discount | (16,520) | (17,843) |
| Less: current portion | (734) | (737) |
| Total long-term portion | 313,239 | 309,377 |
| Long-term Debt | $ 313,973 | $ 310,114 |