Product Warranties (Tables)

6 Months Ended

Jun. 30, 2012

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

A reconciliation of the changes in the Company's warranty reserve is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands)	2012			2011			2012			2011
Balance at the beginning of the period	$	1,229		$	591		$	983		$	605
Warranty expenses accrued	99			436			611			707
Warranty settlements made	(552		)	(303		)	(818		)	(588		)
Balance at the end of the period	$	776		$	724		$	776		$	724