Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Reconciliation of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	2018
	(in thousands)
Balance at January 1, 2018	$	5,839
Additions based on tax positions related to current year	56
Additions for tax positions of prior years	—
Reductions for tax positions of prior years	—
Reductions due to lapse of applicable statute of limitations	(1,954		)
Settlements	—
Balance at June 30, 2018	$	3,941