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Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Contingency [Line Items]
Annual effective tax rate ( as a percent )			24.80%	16.50%
Provision for (benefit from) income taxes	$ 1,158	$ (150)	$ 9,225	$ (4,966)
Unrecognized tax benefits	14,200		14,200		$ 10,000
Accrued interest and penalties	$ 1,600		1,600		$ 1,400
Equity Compensation
Income Tax Contingency [Line Items]
Provision for (benefit from) income taxes			(7,000)	(2,600)
Aesynt
Income Tax Contingency [Line Items]
Provision for (benefit from) income taxes			$ 9,600	$ (4,200)

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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