Interim Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales
Products	$ 450,079	$ 439,321	$ 870,070	$ 826,395
Service	120,204	121,767	235,613	233,459
Total net sales	570,283	561,088	1,105,683	1,059,854
Cost of sales
Products	198,612	189,253	386,457	356,966
Service	72,663	75,644	143,116	145,190
Gross profit	299,008	296,191	576,110	557,698
Research and development	27,966	29,605	56,633	55,956
Selling, general and administrative	169,985	172,054	337,626	333,432
Amortization	5,357	4,325	10,556	7,947
Interest expense	5,706	5,692	11,529	11,403
Restructuring Charges	7,835	1,971	8,143	2,469
Other charges (income), net	433	1,207	589	1,876
Earnings before taxes	81,726	81,337	151,034	144,615
Provision for taxes	20,022	21,149	37,003	37,600
Net earnings	61,704	60,188	114,031	107,015
Basic earnings per common share:
Net earnings	$ 1.97	$ 1.88	$ 3.63	$ 3.33
Weighted average number of common shares	31,267,660	31,997,850	31,399,788	32,144,223
Diluted earnings per common share:
Net earnings	$ 1.93	$ 1.82	$ 3.54	$ 3.23
Weighted average number of common and common equivalent shares	32,038,928	33,013,887	32,212,927	33,152,760
Comprehensive income, net of tax	$ 36,969	$ 97,326	$ 110,087	$ 163,069