Restructuring Costs (Tables)

6 Months Ended

Jun. 30, 2018

Restructuring and Related Activities [Abstract]

Summary of Restructuring Activities

The following table summarizes restructuring activities for the three months ended June 30, 2018:

	Contract Termination
	(in thousands)
Accrual balance at March 31, 2018	$	99
Cash payments		(13	)
Accrual balance at June 30, 2018	$	86

The following table summarizes restructuring activities for the six months ended June 30, 2018:

	Contract Termination
	(in thousands)
Accrual balance at December 31, 2017	$	137
Cash payments		(51	)
Accrual balance at June 30, 2018	$	86