CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Cash flows from operating activities:
Net earnings	$ 31,668	$ 20,773
Adjustments to arrive at net cash provided by operating activities:
Depreciation and amortization	12,799	12,404
Share-based compensation expense	2,113	1,177
Net loss on assets	161	14
Loss on divestitures and other charges	1,238	10,558
Deferred income taxes	4,257	4,077
Changes in operating assets and liabilities:
Trade accounts receivable	(27,237)	(41,684)
Inventories	27,621	29,058
Prepaid expenses and other assets	(13,239)	(6,048)
Accounts payable and other accrued expenses	(6,242)	2,773
Accrued salaries, wages, and withholdings from employees	(10,872)	1,611
Income taxes	5,742	1,662
Other liabilities	955	553
Net cash provided by operating activities	28,964	36,928
Cash Flows from Investing Activities:
Acquisition of property, plant, and equipment	(14,244)	(9,411)
Proceeds from sale of assets	69	6
Proceeds from divesture of businesses	4,059	0
Other investing activities	286	4,505
Net cash used in investing activities	(9,830)	(4,900)
Cash flows from financing activities:
Proceeds from additional borrowings	21,530	9,669
Debt payments	(8,999)	(11,104)
Purchase of treasury stock	(11,665)	0
Dividends paid	(16,535)	(16,500)
Other financing activities	(228)	(249)
Net cash used in financing activities	(15,897)	(18,184)
Effect of exchange rate changes on cash and cash equivalents	(7)	(11,912)
Net increase in cash and cash equivalents	3,230	1,932
Cash and cash equivalents at beginning of period	24,770	21,153	$ 21,153
Cash and cash equivalents at end of period	$ 28,000	$ 23,085	$ 24,770