CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net earnings	$ 96,687	$ 91,898
Adjustments to arrive at net cash provided by operating activities:
Depreciation and amortization	36,504	34,983
Share-based compensation	3,375	2,673
(Gain) Loss on assets	(1,015)	297
Deferred income taxes	627	(4,108)
Changes in operating assets and liabilities	(43,968)	(19,171)
Net cash provided by operating activities	92,210	106,572
Cash flows from investing activities:
Acquisition of property, plant and equipment	(67,600)	(44,125)
Proceeds from sale of assets	1,321	3
Other investing activity	(160)	(207)
Net cash used in investing activities	(66,439)	(44,329)
Cash flows from financing activities:
Proceeds from additional borrowings	55,665	49,407
Debt payments	(46,212)	(78,169)
Purchase of treasury stock	(17,104)	0
Dividends paid	(32,489)	(31,451)
Proceeds from options exercised and other equity transactions	1,399	3,006
Net cash used in financing activities	(38,741)	(57,207)
Effect of exchange rate changes on cash and cash equivalents	2,455	(5,807)
Net decrease in cash and cash equivalents	(10,515)	(771)
Cash and cash equivalents at beginning of period	22,855	14,255
Cash and cash equivalents at end of period	$ 12,340	$ 13,484