Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income	$ 71,608	$ 88,247
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50,251	47,070
(Gain) loss on disposition of property, plant and equipment	(38)	52
Stock compensation expense	6,294	5,469
Changes in assets and liabilities:
Accounts receivable	11,691	(22,623)
Inventories	5,639	(23,057)
Prepaid expenses and other current assets	(11,927)	(9,905)
Accounts payable	(10,355)	5,282
Accrued liabilities	(3,843)	12,595
Deferred income taxes	(1,706)	(6,492)
Long-term retirement benefits	(2,682)	(725)
Long-term tax liability	(6,949)	(7,465)
Other	172	133
Net cash provided by operating activities	108,155	88,581
Investing activities:
Proceeds from disposition of property, plant and equipment	173	478
Capital expenditures	(25,434)	(24,335)
Revenue sharing program payments	0	(5,800)
Other	0	(1,000)
Net cash used in investing activities	(25,261)	(30,657)
Financing activities:
Net change in other borrowings	25,012	16,795
Payments on long-term debt	(222,322)	(313,512)
Proceeds from the issuance of long-term debt	175,918	353,089
Proceeds from the issuance of common stock	1,169	435
Common stock repurchases	(50,347)	(118,115)
Dividends paid	(16,303)	(15,795)
Withholding taxes paid on stock issuances	(186)	(175)
Other	(1,715)	(2,550)
Net cash used in financing activities	(88,774)	(79,828)
Effect of exchange rate changes on cash flows	31	(2,924)
Decrease in cash and cash equivalents	(5,849)	(24,828)
Cash and cash equivalents at beginning of period	100,719	145,290
Cash and cash equivalents at end of period	$ 94,870	$ 120,462