Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Apr. 01, 2022
Cash flows from operating activities:
Net income (loss)	$ 25,588	$ 14,019
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, and amortization	15,092	13,179
Amortization of deferred financing costs in interest expense	424	511
Stock-based compensation expense (non-cash)	2,250	1,699
Deferred income tax (benefit) expense	(52)	401
Changes in assets and liabilities:
Accounts receivable	7,538	(15,045)
Inventory	(12,081)	(28,129)
Prepaid and other current assets	(2,865)	(5)
Accounts payable and accrued expenses	(1,904)	(4,177)
Unearned revenue	254	(343)
Interest and taxes payable	657	1,874
Unearned income due to customer prepayments	7,724	0
Other-net	(4,520)	1,712
Net cash (used in) provided by operating activities	38,105	(14,304)
Cash flows from investing activities:
Payments for purchase of property, plant, and equipment	(30,014)	(18,977)
Proceeds from sale of property, plant, and equipment	212	11
Net cash used in investing activities	(29,802)	(18,966)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit agreement, net	4,600	49,067
Repayment of debt	(3,907)	(3,839)
Principal payments under finance lease obligations	(799)	(686)
Cash dividends paid	(2,571)	(2,520)
Payments of withholding taxes for stock-based compensation awards	(3,614)	(2,717)
Net cash provided by financing activities	(6,291)	39,305
Effects of exchange rate changes	130	(260)
Net change in cash and cash equivalents	2,142	5,775
Cash and cash equivalents at beginning of period	13,101	14,462
Cash and cash equivalents at end of period	$ 15,243	$ 20,237