COMMITMENTS AND CONTINGENCIES (Tables)

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Summary of the activity related to the product warranty liability

The following table summarizes the activity related to the product warranty liability:

	Three Months Ended						Nine Months Ended
	September 30, 2014			September 30, 2013			September 30, 2014			September 30, 2013
	(in thousands)
Balance at beginning of period	$	3,752		$	4,071		$	3,686		$	4,832
Accrual for warranties during the period, net	942			674			2,787			1,462
Actual costs incurred	(946		)	(942		)	(2,725		)	(2,491		)
Balance at end of period	$	3,748		$	3,803		$	3,748		$	3,803