CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 512,218,000	$ 145,013,000	$ 11,844,000
Adjustments to reconcile net income to net cash provided (used) by operating activities:
Depreciation	119,803,000	122,135,000	121,839,000
Amortization	18,592,000	10,650,000	8,098,000
Gain (loss) on Extinguishment of debt, Cash Flow	5,314,000
Loss on early extinguishment of debt	7,704,000	1,127,000	2,265,000
Deferred income tax expense (benefit)	6,815,000	(6,522,000)	57,349,000
Equity in income of unconsolidated entities, net	(273,000)	(384,000)	0
Dividends from unconsolidated entities	125,000	88,000	93,000
Gain on Sale from discontinued business	(569,135,000)
Other, net	1,764,000	2,666,000	749,000
Changes in assets and liabilities:
Accounts receivable	(3,464,000)	(16,881,000)	(32,012,000)
Increase (Decrease) in Insurance Settlements Receivable	195,000,000	0	0
Inventories	(42,484,000)	(14,706,000)	19,557,000
Contract assets	(21,795,000)	(3,312,000)	0
Increase (Decrease) In Right-Of_Use Assets	15,164,000	0	0
Accounts payable	13,407,000	18,347,000	12,554,000
Accrued interest payable	14,723,000	(154,000)	438,000
Accrued compensation	(15,759,000)	(1,127,000)	11,126,000
Advances on contracts and other customer advances	(4,172,000)	3,057,000	(16,811,000)
Increase (Decrease) in Operating Liabilities	(14,740,000)	0	0
Insurance liability	(195,000,000)	0	0
Income taxes payable - gain on sale of discontinued businesses	12,373,000	0	0
Retirement plan liabilities, net	(24,022,000)	(33,321,000)	(21,300,000)
Other assets and liabilities	(24,617,000)	(33,527,000)	3,368,000
Net cash provided (used) by operating activities	(163,000)	192,022,000	176,892,000
Cash flows from investing activities:
Purchases of property, plant and equipment	(184,973,000)	(132,168,000)	(98,314,000)
Proceeds from sales of assets	17,022,000	11,887,000	13,418,000
Expenditures for intangible assets	(1,311,000)	0	0
Proceeds from Divestiture of Businesses	658,414,000	0	0
Net cash used to acquire businesses	(623,495,000)	(56,389,000)	0
Payments to Acquire Equity Method Investments	(2,364,000)	0	0
Payments for Hedge, Investing Activities	(2,758,000)	0	0
Net proceeds (payments) from settlement of foreign currency forward exchange contracts	7,273,000	15,527,000	(18,429,000)
Net cash used by investing activities	(132,192,000)	(161,143,000)	(103,325,000)
Cash flows from financing activities:
Short-term borrowings, net	(5,398,000)	1,932,000	5,061,000
Current maturities and long-term debt:
Additions	848,314,000	128,858,000	27,985,000
Reductions	(661,620,000)	(116,988,000)	(108,280,000)
Dividends paid to noncontrolling interests	(4,712,000)	(5,480,000)	(2,445,000)
Noncontrolling Interest - purchase or sale	4,026,000	477,000	(3,412,000)
Stock-based compensation - Employee taxes paid	(11,234,000)	(3,730,000)	(1,688,000)
Common stock acquired for treasury	(31,838,000)	(30,011,000)	0
Deferred financing costs	(11,272,000)	(596,000)	(42,000)
Other financing activities, net	(532,000)	0	(894,000)
Net cash provided (used) by financing activities	125,734,000	(25,538,000)	(83,715,000)
Effect of exchange rate changes on cash, including restricted cash	(793,000)	(4,404,000)	4,478,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(7,414,000)	937,000	(5,670,000)
Cash and cash equivalents, including restricted cash, at beginning of period	67,146,000	66,209,000	71,879,000
Cash and cash equivalents, including restricted cash, at end of period	59,732,000	67,146,000	66,209,000
Change in accrual for purchases of property, plant and equipment included in accounts payable	5,164,000	7,567,000	(666,000)
Purchase of businesses, net of cash acquired
Working Capital Acquired	(26,663,000)	1,295,000
Working capital			0
Property, plant and equipment	(77,295,000)	(3,327,000)	0
Goodwill	(330,230,000)	(22,518,000)	0
Long-term debt acquired	605,000	335,000
Other noncurrent assets and liabilities, net	(189,912,000)	(32,174,000)	0
Net cash used to acquire businesses	$ (623,495,000)	(56,389,000)	0
Restructuring Costs, Program Two		$ 0	$ 0