Restructuring (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring And Related Activities [Abstract]

Accrued Restructuring Obligations and Related Activity

The following table details accrued restructuring obligations (included in accrued liabilities in the Condensed Consolidated Balance Sheets) and related activity for the fiscal year ended December 31, 2017 and the three-month period ended March 31, 2018:

	Severanceand Benefits			Lease Abandonment Costs			Other Costs			Total
	(In thousands)
Accrued obligations as of January 1, 2017	$	395		$	368		$	—		$	763
Restructuring expense		931			900			1,055			2,886
Settlement of obligations		(787	)		(1,086	)		(1,019	)		(2,892	)
Accrued obligations as of December 31, 2017		539			182			36			757
Restructuring expense		—			68			43			111
Settlement of obligations		(185	)		(109	)		(44	)		(338	)
Accrued obligations as of March 31, 2018	$	354		$	141		$	35		$	530

Restructuring Expenses

The following amounts are included in restructuring expenses for the periods indicated:

	Three Months Ended March 31,
	2018		2017
Lease abandonment costs	$	68	$	516
Other costs		43		383
Restructuring expenses	$	111	$	899