Income Taxes - Reconciliation of Beginning and Ending Liability for Unrecognized Tax Benefits that Do Not Meet More-Likely-Than-Not Threshold (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 32,776	$ 24,066
Additions for tax positions related to current year	6,111	7,606
Additions for tax positions related to prior years	4,134	804
Reductions related to lapse of applicable statute	(338)	(1,380)
Impact of 2017 Tax Act	0	3,731
Reductions related to settlements with taxing authorities	(2,301)	(2,051)
Ending balance	$ 40,382	$ 32,776

Unrecognized Tax Benefits, Increase Resulting From Tax Cuts And Jobs Act Of 2017

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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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.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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