Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Cash Flows [Abstract]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 74,238	$ 94,870
Operating activities:
Net income	30,300	71,608
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	45,258	50,251
Gain on disposition of property, plant and equipment	(111)	(38)
Stock compensation expense	5,798	6,294
Seeger divestiture charges	6,620	0
Changes in assets and liabilities, net of the effects of divestitures:
Accounts receivable	89,426	11,691
Inventories	(32,551)	5,639
Prepaid expenses and other current assets	(6,607)	(11,927)
Accounts payable	(12,401)	(10,355)
Accrued liabilities	2,581	(3,843)
Deferred income taxes	(5,417)	(1,706)
Long-term retirement benefits	(2,730)	(2,682)
Long-term tax liability	0	(6,949)
Other	2,911	172
Net cash provided by operating activities	123,077	108,155
Investing activities:
Proceeds from disposition of property, plant and equipment	230	173
Proceeds from the sale of businesses, net of cash sold	36,879	0
Restricted Cash Provided by (Used in) Investing Activities	(6,621)	0
Capital expenditures	(19,800)	(25,434)
Net cash provided (used) in investing activities	10,688	(25,261)
Financing activities:
Net change in other borrowings	(2,167)	25,012
Payments on long-term debt	(164,370)	(222,322)
Proceeds from the issuance of long-term debt	50,000	175,918
Proceeds from the issuance of common stock	350	1,169
Common stock repurchases	(15,550)	(50,347)
Dividends paid	(16,205)	(16,303)
Withholding taxes paid on stock issuances	(137)	(186)
Other	(3,531)	(1,715)
Net cash used in financing activities	(151,610)	(88,774)
Effect of exchange rate changes on cash flows	(1,722)	31
Decrease in cash and cash equivalents	(19,567)	$ (5,849)
Cash and cash equivalents at beginning of period	93,805
Cash and cash equivalents at end of period	$ 74,238