|
Earnings (Loss) Per Share (Details Textual) (1.875% convertible senior notes due 2032 [Member], USD $)
|
12 Months Ended |
|---|---|
|
Dec. 31, 2012
|
|
|
1.875% convertible senior notes due 2032 [Member]
|
|
| Debt Instrument [Line Items] | |
| Aggregate principal amount of offering | $ 126,500,000 |
| Debt instrument, interest rate, stated percentage | 1.875% |
| Debt instrument, convertible, conversion ratio | 17.1985 |
| Conversion principal amount | $ 1,000 |
| X | ||||||||||
|
- Definition
Increment of principal amount where the conversion rate is applied. No definition available.
|
| X | ||||||||||
|
- Definition
The ratio applied to the debt for purposes of determining the number of shares of the equity security into which the debt will be converted. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|