Restructuring Activities (Tables)

12 Months Ended

Dec. 31, 2018

Restructuring And Related Activities [Abstract]

Rollforward of accrued restructuring liability

A rollforward of the accrued restructuring liability is presented below (in thousands):

Balance at January 1, 2018	$	520
Accrued restructuring charges		1,381
Payments		(1,191	)
Balance at December 31, 2018	$	710