Restructuring Costs (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of restructuring costs

The following table summarizes the total expenses recorded related to the 2017 restructuring activities reflected in the consolidated statements of operations by type of activity. There were no restructuring costs in 2016 and 2015.

	Twelve months ended December 31, 2017
(in Thousands)	Employee Separation Costs		Asset-Related Charges		Other		Total
Restructuring	$	1,515	$	22	$	82	$	1,620

The following table presents a reconciliation of the restructuring reserve recorded within accrued liabilities on the Company’s consolidated balance sheet for year ended December 31, 2017:

	Twelve months ended December 31, 2017
(in Thousands)	Employee Separation Costs		Asset-Related Charges			Other			Total
Liability, beginning of period	$	—	$	—		$	—		$	—
Charges	1,515		22			82			1,620
Non-cash activity	7		(22		)	(25		)	(41		)
Liability end of period	1,522		—			57			1,579