Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES
Net income	$ 89,070	$ 41,131
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	14,154	11,915
Deferred Income Taxes	(5,212)	0
Stock-based compensation	3,155	1,972
Loss (gain) on disposal of property, plant and equipment	2,122	0
Other non-cash adjustments	121	121
Changes in operating assets and liabilities:
Accounts receivable	(332,333)	(204,014)
Inventories	(16,796)	13,571
Prepaid expenses and other assets	(319)	291
Accounts payable	26,238	2,975
Accrued expenses and other liabilities	12,041	3,361
Income taxes receivable/payable	33,715	13,206
Net cash used in operating activities	(174,044)	(115,471)
INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(37,720)	(39,192)
Proceeds from sales of property, plant and equipment	106	0
Net cash used in investing activities	(37,614)	(39,192)
FINANCING ACTIVITIES
Borrowings under line of credit	258,500	200,500
Principal payments under line of credit	(41,000)	(53,000)
Repurchases of common stock	(5,145)	(1,592)
Proceeds from employee stock purchase and option plans	397	316
Financing costs	0	30
Net cash provided by financing activities	212,752	146,254
Net increase (decrease) in cash and cash equivalents	1,094	(8,409)
Cash and cash equivalents, beginning of period	1,959	12,325
Cash and cash equivalents, end of period	3,053	3,916
Supplemental Disclosure:
Cash paid for interest, net of capitalized interest	0	1,817
Cash paid for income taxes, net	1,444	733
Supplemental non-cash investing and financing disclosure:
Capital expenditures in accounts payable	$ 851	$ 229