Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net income	$ 20,484	$ 19,382
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,301	21,992
Gain on disposition of property, plant and equipment	(1)	(50)
Stock compensation expense	2,534	2,306
Changes in assets and liabilities:
Accounts receivable	(10,961)	(7,590)
Inventories	(15,154)	78
Prepaid expenses and other current assets	(5,809)	(4,882)
Accounts payable	4,163	9,121
Accrued liabilities	(28,197)	(6,456)
Deferred income taxes	2,115	(101)
Long-term retirement benefits	(1,862)	(569)
Other	1,074	2,381
Net cash (used) provided by operating activities	(9,313)	35,612
Investing activities:
Proceeds from disposition of property, plant and equipment	60	83
Capital expenditures	(7,405)	(7,855)
Other	(1,094)	3,758
Net cash used by investing activities	(8,439)	(4,014)
Financing activities:
Net change in other borrowings	(784)	5,354
Payments on long-term debt	(34,918)	(30,933)
Proceeds from the issuance of long-term debt	35,000	15,000
Proceeds from the issuance of common stock	153	125
Dividends paid	(8,111)	(8,104)
Withholding taxes paid on stock issuances	(49)	(68)
Other	(3,665)	(5,816)
Net cash used by financing activities	(12,374)	(24,442)
Effect of exchange rate changes on cash flows	137	(2,331)
(Decrease) increase in cash, cash equivalents and restricted cash	(29,989)	4,825
Cash, cash equivalents and restricted cash at beginning of period	111,909	91,468
Cash, cash equivalents and restricted cash at end of period	81,920	96,293
Cash and cash equivalents at end of period	75,255	84,900
Prepaid Expenses and Other Current Assets
Financing activities:
Restricted cash	(4,434)	(6,198)
Other Noncurrent Assets
Financing activities:
Restricted cash	$ (2,231)	$ (5,195)