CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net earnings	$ 94,906	$ 87,567
Adjustments to arrive at net cash provided by operating activities:
Depreciation and amortization	35,176	36,374
Share-based compensation	6,743	14
Loss on assets	7,893	8,725
Deferred income taxes	8,454	4,466
Liquidation of foreign entity	(3,257)	0
Changes in operating assets and liabilities	679	(43,672)
Net cash provided by operating activities	150,594	93,474
Cash flows from investing activities:
Acquisition of property, plant and equipment	(58,004)	(55,508)
Proceeds from sale of assets	3,597	12,826
Acquisition of new business	0	(8,393)
Other investing activity	(82)	(168)
Net cash used in investing activities	(54,489)	(51,243)
Cash flows from financing activities:
Proceeds from additional borrowings	163,370	198,857
Debt payments	(185,697)	(31,850)
Purchase of treasury stock	(27,728)	(160,990)
Dividends paid	(36,357)	(35,901)
Proceeds from options exercised and other equity transactions	409	554
Net cash used in financing activities	(86,003)	(29,330)
Effect of exchange rate changes on cash and cash equivalents	1,406	(9,050)
Net increase in cash and cash equivalents	11,508	3,851
Cash and cash equivalents at beginning of period	11,997	20,329
Cash and cash equivalents at end of period	$ 23,505	$ 24,180