Interim Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net sales
Products	$ 468,678	$ 450,128	$ 890,826	$ 852,466
Service	140,156	128,552	268,629	250,567
Total net sales	608,834	578,680	1,159,455	1,103,033
Cost of sales
Products	199,458	193,839	380,656	366,428
Service	81,200	75,998	157,982	148,604
Gross profit	328,176	308,843	620,817	588,001
Research and development	32,125	29,003	61,622	56,703
Selling, general and administrative	183,103	173,434	355,294	339,459
Amortization	7,283	5,807	14,377	10,929
Interest expense	5,956	5,543	11,622	10,943
Restructuring Charges	1,905	3,196	3,397	8,198
Other charges (income), net	406	987	723	1,760
Earnings before taxes	97,398	90,873	173,782	160,009
Provision for taxes	23,376	21,811	41,709	38,403
Net earnings	74,022	69,062	132,073	121,606
Basic earnings per common share:
Net earnings	$ 2.55	$ 2.29	$ 4.52	$ 4.03
Weighted average number of common shares	29,074,695	30,119,889	29,221,647	30,209,729
Diluted earnings per common share:
Net earnings	$ 2.49	$ 2.24	$ 4.41	$ 3.93
Weighted average number of common and common equivalent shares	29,750,815	30,849,934	29,918,456	30,975,957
Comprehensive Income, Net of Tax (Note 8)	$ 71,631	$ 74,897	$ 131,536	$ 110,326