Income Taxes Unrecognized tax expense (benefit) roll forward (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Income Tax Disclosure [Abstract] | ||||
| Unrecognized Tax Benefits | $ 61,500 | $ 63,086 | $ 23,417 | $ 26,053 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 3,080 | 3,037 | 2,025 | |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | (4,696) | (458) | $ (4,661) | |
| Unrecognized Tax Benefits, Increase Resulting from Acquisition | $ 37,090 | |||
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 52,200 | |||
| Income Tax Examination, Penalties and Interest Accrued | $ 1,100 | |||
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- References No definition available.
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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in unrecognized tax benefits resulting from acquisitions. No definition available.
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- 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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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