Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2016

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)	Six Months Ended June 30,
	2016		2015
Balance at beginning of period	$	35	$	353
Accruals for warranties issued during the period	—		—
Settlements (in cash or in kind) during the period	—		(329		)
Balance at end of period	$	35	$	24