|
Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |
|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2011
|
Sep. 30, 2012
|
Dec. 31, 2011
|
|
| Income Tax Disclosure [Abstract] | |||||
| Income tax expense (benefit) | $ 1,180 | $ 394 | $ 2,739 | $ 611 | |
| Income tax benefit movement | (2,128) | ||||
| Income Tax Examination [Line Items] | |||||
| Unrecognized tax position as a result of a business acquisition | 84 | ||||
|
Foreign Tax Authority [Member]
|
|||||
| Income Tax Examination [Line Items] | |||||
| Tax benefit from settlement of overseas tax filings for 2008, 2009 and 2010 | $ 0 | ||||