Statements of Consolidated Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
OPERATING ACTIVITIES
Net income		$ 63,337		$ 54,399		$ 35,721
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization		18,914		16,430		15,564
Provision for accounts receivable allowances		3,441		2,169		2,895
Provision for inventory reserves		8,081		2,352		3,052
Deferred income taxes		(2,232)		(2,656)		6,544
Share-based compensation expense		4,948		4,596		4,163
Goodwill impairment		0		6,529		0
Gain from company owned life insurance policy				(4,364)
Loss on exit of business				1,025
Gain on sale of property and equipment		(2,478)		(775)		(184)
Other, net		435		92		656
Changes in operating assets and liabilities
Accounts receivable		16,969		(28,049)		(11,576)
Inventories		(4,952)		(36,979)		(24,154)
Prepaid expenses		5,961		5,051		(2,974)
Trade accounts payable and accrued liabilities		2,302		6,707		11,558
Accrued income and other taxes		(937)		2,005		(4,332)
Contributions to company pension plan		(1,500)		(2,132)
Other, net		(4,647)		(247)		(3,335)
NET CASH PROVIDED BY OPERATING ACTIVITIES		107,642		26,153		33,598
INVESTING ACTIVITIES
Capital expenditures		(35,332)		(40,598)		(18,384)
Proceeds from the sale of property and equipment		2,631		3,169		141
Proceeds from company owned life insurance policy				6,909
Acquisition of businesses, net of cash		(12,089)		(16,235)
NET CASH USED IN INVESTING ACTIVITIES		(44,790)		(46,755)		(18,243)
FINANCING ACTIVITIES
(Payments) Proceeds of notes payable to banks		(11,081)		2,214		376
Proceeds from long-term debt		169,172		185,016		98,919
Payments of long-term debt		(186,179)		(155,929)		(113,537)
Dividends paid		(4,106)		(4,099)		(4,128)
Proceeds from issuance of common shares		2,164		808		409
Purchase of common shares for treasury		(728)		(158)		(177)
Purchase of common shares for treasury from related parties		(18,164)		(5,309)		(5,092)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES		(48,922)		22,543		(23,230)
Effects of exchange rate changes on cash, cash equivalents and restricted cash		2,438		(1,108)		(894)
Net increase (decrease) in cash, cash equivalents and restricted cash		16,368		833		(8,769)
Cash, cash equivalents and restricted cash at beginning of year		37,239	[1]	36,406	[1]	45,175
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF YEAR	[1]	$ 53,607		$ 37,239		$ 36,406

[1] Non-cash investing and financing activities: The Company purchased a new corporate aircraft during the year ended December 31, 2021 with a term loan in the principal amount of $20.5 million. For further information regarding this transaction, refer to Note 7 of the Notes to the Consolidated Financial Statements.