Interim Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net sales
Products	$ 479,241	$ 382,369	$ 1,305,636	$ 1,054,602
Service	121,873	107,844	355,332	320,811
Total net sales	601,114	490,213	1,660,968	1,375,413
Cost of sales
Products	214,483	169,196	571,449	458,297
Service	72,214	64,962	217,404	196,510
Gross profit	314,417	256,055	872,115	720,606
Research and development	30,068	24,992	86,024	70,562
Selling, general and administrative	185,832	145,303	519,264	423,919
Amortization	4,795	3,667	12,742	10,613
Interest expense	5,893	4,792	17,296	14,757
Restructuring charges	362	566	2,831	2,476
Other charges (income), net	409	(127)	2,285	857
Earnings before taxes	87,058	76,862	231,673	197,422
Provision for taxes	18,862	14,781	56,462	46,126
Net earnings	$ 68,196	$ 62,081	$ 175,211	$ 151,296
Basic earnings per common share:
Net earnings	$ 2.15	$ 1.87	$ 5.47	$ 4.52
Weighted average number of common shares	31,760,270	33,171,017	32,016,238	33,488,099
Diluted earnings per common share:
Net earnings	$ 2.09	$ 1.82	$ 5.31	$ 4.41
Weighted average number of common and common equivalent shares	32,664,482	34,027,191	32,990,000	34,318,582