Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Schedule of Provision for (Benefit From) Income Taxes

The following table presents the provision for (benefit from) income taxes for the respective periods:

	Three months ended June 30,						Six months ended June 30,
(dollars in thousands)	2018			2017			2018			2017
Provision for (benefit from) income taxes	$	2,796		$	8,088		$	(1,335	)	$	(4,408	)
Effective tax rate		(85.1	%)		33.2	%		7.8	%		36.8	%