Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

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:

	Year Ended December 31,
(In thousands)	2014			2013			2012
Balance at beginning of period	$	41		$	404		$	6
Accruals for warranties issued during the period	1,178			416			398
Settlements (in cash or in kind) during the period	(866		)	(779		)	—
Balance at end of period	$	353		$	41		$	404