CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net earnings	$ 59,976	$ 26,986
Adjustments to arrive at net cash provided by operating activities:
Depreciation and amortization	24,258	26,395
Share-based compensation	711	2,849
Loss on assets	6,168	48,260
Deferred income taxes	3,032	(6,590)
Changes in operating assets and liabilities	(17,268)	(28,461)
Net cash provided by operating activities	76,877	69,439
Cash flows from investing activities:
Acquisition of property, plant and equipment	(36,970)	(29,752)
Proceeds from sale of assets	12,627	930
Acquisition of new business	(8,393)	0
Other investing activity	(101)	(620)
Net cash used in investing activities	(32,837)	(29,442)
Cash flows from financing activities:
Proceeds from additional borrowings	130,240	174,741
Debt payments	(20,097)	(73,478)
Purchase of treasury stock	(123,094)	(108,753)
Dividends paid	(23,600)	(23,809)
Proceeds from options exercised and other equity transactions	554	396
Net cash used in financing activities	(35,997)	(30,903)
Effect of exchange rate changes on cash and cash equivalents	(6,587)	(502)
Net increase in cash and cash equivalents	1,456	8,592
Cash and cash equivalents at beginning of period	20,329	19,836
Cash and cash equivalents at end of period	$ 21,785	$ 28,428