Restructuring Activities (Tables)

6 Months Ended

Jun. 30, 2019

Restructuring And Related Activities [Abstract]

Summary of Charges Related to Restructuring Activities

The following table summarizes the charges related to the restructuring activities as of June 30, 2019 and 2018:

(in thousands)	Accrued Restructuring Expenses at December 31, 2018		Expenses		Less: Payments			Accrued Restructuring Expenses at June 30, 2019
Severance, benefits and related costs due to workforce    reduction	$	921	$	4,890	$	(4,755	)	$	1,056
Totals	$	921	$	4,890	$	(4,755	)	$	1,056

(in thousands)	Accrued Restructuring Expenses at December 31, 2017		Expenses		Less: Payments			Accrued Restructuring Expenses at June 30, 2018
Severance, benefits and related costs due to workforce    reduction	$	628	$	—	$	(628	)	$	—
Totals	$	628	$	—	$	(628	)	$	—