CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Operating Activities:
Net income	$ 62,213	$ 99,055	$ 141,241
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	133,987	131,854	124,032
Amortization of intangibles	17,966	14,844	14,056
Gain (Loss) on Disposition of Business	(191,571)	0	0
Gain on sale of land	0	(10,377)	0
Impairment charges	23,139	88,987	14,763
Pension settlement charges	15,819	775	6,427
Share-based compensation expense	11,865	8,520	24,963
Equity in earnings, net of dividends related to earnings	(1,587)	(1,856)	(137)
Loss on refinancing and extinguishment of debt	0	770	1,020
Deferred income taxes	15,874	(38,931)	7,975
Other	5,230	2,652	1,286
Changes in operating assets and liabilities:
Accounts and tooling receivable	(26,534)	17,916	(26,428)
Inventories	29,430	1,410	(13,929)
Prepaid expenses	(150)	(4,647)	5,981
Accounts payable	(14,643)	(32,502)	11,415
Payroll and accrued liabilities	(1,258)	(61,800)	8,378
Other	17,917	(67,282)	(7,937)
Net cash provided by operating activities	97,697	149,388	313,106
Investing activities:
Capital expenditures	(164,466)	(218,071)	(186,795)
Acquisition of businesses, net of cash acquired	(452)	(171,653)	(478)
Proceeds from Divestiture of Businesses	243,362	0	0
Proceeds from sale of fixed assets and other	5,586	6,733	(13,349)
Net cash provided by (used for) investing activities	84,030	(382,991)	(200,622)
Financing activities:
Principal payments on long-term debt	(4,494)	(3,437)	(19,866)
Purchase of noncontrolling interest	(4,797)	(2,450)	0
Repurchase of common stock	(36,550)	(59,955)	(55,123)
Proceeds from exercise of warrants	0	0	2,373
(Decrease) increase in short term debt, net	(40,406)	65,198	10,683
Taxes withheld and paid on employees' share-based payment awards	(2,787)	(11,618)	(13,297)
Contribution from noncontrolling interests and other	5,042	(2,178)	(297)
Net cash provided by (used in) financing activities	(83,992)	(14,440)	(75,527)
Effects of exchange rate changes on cash and cash equivalents	(3,392)	(3,019)	(1,475)
Changes in cash and cash equivalents	94,343	(251,062)	35,482
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	361,742	267,399	518,461
Supplemental Cash Flow Information [Abstract]
Cash paid for interest	47,580	44,877	47,424
Cash paid for income taxes, net of refunds	$ 23,599	$ 32,299	$ 36,883