Additional Financial Information Disclosures (Tables)

6 Months Ended

Jun. 30, 2012

Basis of Presentation/Additional Financial Information Disclosures [Abstract]

Changes in warranty and after-sale costs reserve

	Three months ended June 30,						Six months ended June 30,
(In thousands)	2012			2011			2012			2011
Balance at beginning of period	$	1,406		$	911		$	1,593		$	889
Net additions charged to earnings		166			272			345			476
Costs incurred and adjustments		(420	)		(251	)		(786	)		(433	)
Balance at end of period	$	1,152		$	932		$	1,152		$	932