Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Changes in Reserve for Product Warranty Claim Costs

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

(In thousands)	Three Months Ended March 31,
	2017			2016
Balance at beginning of period	$	134		$	35
Accruals for warranties issued during the period	—			—
Settlements (in cash or in kind) during the period	(2		)	—
Balance at end of period	$	132		$	35