Income Taxes Unrecognized tax expense (benefit) roll forward (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
|
| Income Tax Disclosure [Abstract] | ||||
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | $ 26,053 | $ 10,808 | $ 5,462 | $ 3,750 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 2,585 | 3,158 | 1,689 | |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 13,733 | $ 2,188 | $ 23 | |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | $ (1,073) | |||
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|