Acquisitions (Tables)

3 Months Ended

Apr. 01, 2012

Business Combinations [Abstract]

Contingent compensation expenses

Contingent compensation expenses recorded as a result of all prior acquisitions consist of the following (in thousands):

	Three Months Ended
	April 1, 2012		April 3, 2011
Contingent compensation expense, included in research and development expense	$	732	$	1,436
Contingent compensation expense, included in selling, general and administrative expense	2,360		688
Total contingent compensation expense	$	3,092	$	2,124