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										9 Months Ended		12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]
Income from continuing operations													$ 220,951	$ 196,189	$ 22,816
Less: Noncontrolling interest in subsidiaries’ earnings													1,449	828	201
Income from continuing operations attributable to common shareholders													219,502	195,361	22,615
Discontinued operations, net of tax								0	19,909	822	901		0	21,632	3,700
Net income attributable to common shareholders	$ 49,706	$ 57,131	[1]	$ 54,874	[2]	$ 57,791	[3]	$ 45,644	$ 62,562	$ 51,662	$ 57,125	[4]	$ 219,502	$ 216,993	$ 26,315
Average basic shares outstanding													57,896	57,443	58,120
Effect of dilutive stock options													943	850	1,084
Average diluted shares outstanding													58,839	58,293	59,204
Earnings per share - basic:
Income from continuing operations attributable to common shareholders								$ 0.80	$ 0.74	$ 0.88	$ 0.99		$ 3.79	$ 3.40	$ 0.39
Discontinued operations, net of tax								$ 0.00	$ 0.34	$ 0.01	$ 0.02		$ 0.00	$ 0.38	$ 0.06
Net income attributable to common shareholders	$ 0.86	$ 0.98		$ 0.95		$ 1.01		$ 0.80	$ 1.08	$ 0.89	$ 1.00		$ 3.79	$ 3.78	$ 0.45
Earnings per share - diluted:
Income from continuing operations attributable to common shareholders								$ 0.79	$ 0.73	$ 0.86	$ 0.97		$ 3.73	$ 3.35	$ 0.38
Discontinued operations, net of tax								$ 0.00	$ 0.34	$ 0.01	$ 0.02		$ 0.00	$ 0.37	$ 0.06
Net income attributable to common shareholders	$ 0.84	$ 0.97		$ 0.93		$ 0.99		$ 0.79	$ 1.07	$ 0.88	$ 0.99		$ 3.73	$ 3.72	$ 0.44

[1] Includes the impact of item (j) cited above, net of tax.

[2] Includes $10,170 of acquisition transaction costs and $4,654 of acquisition related inventory and backlog amortization

[3] Includes the impact of item (c) cited above, net of tax and $460 withholding taxes related to acquisition funding.

[4] Includes the impact of items (a) and (c) cited above, net of tax.