CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 8,790	$ 3,954
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	7,244	8,715
Amortization of intangibles	207	543
Loss on disposal of property and equipment	0	8
Stock-based compensation expense	8,683	6,414
Accretion of discount on marketable securities	(346)	(496)
Deferred income taxes	(2,537)	(1,330)
Increase (decrease) in accounts receivable allowance for credit losses	(381)	163
Change in operating assets and liabilities:
Accounts receivable	4,747	2,232
Inventories	(3,456)	(4,701)
Prepaid expenses and other assets	3,369	846
Accounts payable	4,002	1,294
Taxes payable and accrued liabilities	(3,936)	(1,737)
Net cash provided by operating activities	26,386	15,905
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(5,726)	(4,343)
Purchases of marketable securities	(5,630)	(49,912)
Proceeds from sales and maturities of marketable securities	15,882	54,198
Net cash provided by (used in) investing activities	4,526	(57)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock under employee stock plans	2,787	2,691
Repurchase of common stock	(23,098)	(14,641)
Payments of dividends to stockholders	(11,959)	(11,384)
Net cash used in financing activities	(32,270)	(23,334)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(1,358)	(7,486)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	50,972	63,929
CASH AND CASH EQUIVALENTS AT END OF PERIOD	49,614	56,443
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Unpaid property and equipment	2,491	2,424
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for income taxes, net	$ 2,291	$ 410