CONSOLIDATED STATEMENTS OF EARNINGS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Net sales:
Net sales of tangible products	$ 270,049	$ 239,909	$ 531,941	$ 465,030
Revenue from services and software	18,372	13,251	44,748	25,067
Total net sales	288,421	253,160	576,689	490,097
Cost of sales:
Cost of sales of tangible products	136,962	125,664	267,411	242,775
Cost of services and software	9,290	6,589	19,171	13,350
Total cost of sales	146,252	132,253	286,582	256,125
Gross profit	142,169	120,907	290,107	233,972
Operating expenses:
Selling and marketing	35,755	33,830	71,171	67,345
Research and development	23,710	23,201	46,567	45,059
General and administrative	26,321	24,053	54,712	49,329
Amortization of intangible assets	2,667	1,863	5,339	3,726
Acquisition and integration costs	20,364	618	25,291	1,100
Exit and restructuring costs	287	1,101	554	2,996
Total operating expenses	109,104	84,666	203,634	169,555
Operating income	33,065	36,241	86,473	64,417
Other income (expense):
Investment income	379	473	800	1,150
Foreign exchange income (loss)	43	(462)	(249)	(560)
Loss on forward interest rate swap	(2,433)	0	(2,433)	0
Other, net	(57)	1,464	(49)	1,473
Total other income (loss)	(2,068)	1,475	(1,931)	2,063
Income from continuing operations before income taxes	30,997	37,716	84,542	66,480
Income taxes	3,440	7,158	15,379	12,380
Income from continuing operations	27,557	30,558	69,163	54,100
Income from discontinued operations, net of tax	0	8	0	8
Net income	$ 27,557	$ 30,566	$ 69,163	$ 54,108
Basic earnings per share:
Income from continuing operations	$ 0.54	$ 0.60	$ 1.37	$ 1.06
Income from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income	$ 0.54	$ 0.60	$ 1.37	$ 1.06
Diluted earnings per share:
Income from continuing operations	$ 0.54	$ 0.60	$ 1.35	$ 1.05
Income from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income	$ 0.54	$ 0.60	$ 1.35	$ 1.05
Basic weighted average shares outstanding	50,606	50,900	50,509	50,929
Diluted weighted average and equivalent shares outstanding	51,278	51,283	51,129	51,310