Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Changes in the Liability for Product Warranty Claim Costs

Changes in the liability for product warranty claim costs were as follows:

(In thousands)	Nine Months Ended September 30,
	2019		2018
Balance at beginning of period	$	276	$	339
Accruals for warranties issued during the period	695		787
Settlements (in cash or in kind) during the period	—		(850		)
Balance at end of period	$	971	$	276