Income Taxes Income tax expense (benefit) (Tables)

9 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Schedule of components of income tax expense (benefit)

	Three months ended						Nine months ended
	September 30,						September 30,
		2019			2018			2019			2018
Income tax expense (benefit)	$	467		$	(3,071)		$	920		$	78
Effective tax rate		10.4	%		32.6	%		(20.0)	%		108.3	%