Income Taxes (Details 3) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Reconciliation of Unrecognized Tax Benefits [Roll Forward] | |||
| Unrecognized tax benefits, balance at the beginning of the period | $ 19,596 | $ 24,716 | $ 64,390 |
| Decrease in unrecognized tax benefits resulting from settlements with taxing authorities | (2,405) | (35,279) | |
| Other changes in uncertain tax benefits | (2,741) | (5,120) | (4,395) |
| Unrecognized tax benefits, balance at the end of the period | 14,450 | $ 19,596 | 24,716 |
| Provision for income tax audit settlement | $ 4,000 | ||
| Expected change in unrecognized tax benefits in the next twelve months | $ (5,000) | ||