Nature Of Operations And Significant Accounting Policies (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Income from continuing operations												$ 220,951	$ 196,189
Less: Noncontrolling interest in subsidiaries’ earnings											897	1,449	828
Income from continuing operations attributable to common shareholders											192,672	195,361
Discontinued operations, net of tax											0	0	21,632
Net income attributable to common shareholders	$ 56,212	$ 28,079	$ 59,697	[1]	$ 48,684	[2]					$ 192,672	$ 219,502	$ 216,993
Average basic shares outstanding											58,679	57,896	57,443
Effect of dilutive stock options											924	943	850
Average diluted shares outstanding											59,603	58,839	58,293
Earnings per share - basic:
Income from continuing operations attributable to common shareholders											$ 3.28	$ 3.79	$ 3.40
Discontinued operations, net of tax											$ 0.00	$ 0.00	$ 0.38
Net income attributable to common shareholders	$ 0.0096	$ 0.48	$ 1.01		$ 0.83		$ 860.0000	$ 0.98	$ 0.95	$ 1.01	$ 3.28	$ 3.79	$ 3.78
Earnings per share - diluted:
Income from continuing operations attributable to common shareholders											$ 3.23	$ 3.73	$ 3.35
Discontinued operations, net of tax											$ 0.00	$ 0.00	$ 0.37
Net income attributable to common shareholders	$ 0.0095	$ 0.47	$ 1.00		$ 0.82		$ 840.0000	$ 0.97	$ 0.93	$ 0.99	$ 3.23	$ 3.73	$ 3.72

[1] (d)Includes the impact of item (c) cited above, net of tax and $1,055 loss on divestiture of a small business.

[2] Includes restructuring charges $10,322, acquisition integration related costs of $8,402 and acquisition related inventory step up and backlog amortization of $4,790 in 2014. Includes acquisition related inventory and backlog amortization of $4,654 and acquisition costs of $1.1 million in 2013 and restructuring charges of $3,355 in 2012.