CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 8,803	$ 23,094
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	20,788	25,560
Amortization of intangibles	623	1,071
Loss (gain) on disposal of property and equipment	(108)	216
Stock-based compensation expense	39,965	25,787
Accretion of discount on marketable securities	(919)	(1,252)
Deferred income taxes	(861)	(8,688)
Decrease in accounts receivable allowance for credit losses	(381)	(459)
Change in operating assets and liabilities:
Accounts receivable	(3,962)	(1,501)
Inventories	994	(4,516)
Prepaid expenses and other assets	5,201	5,614
Accounts payable	6,015	1,914
Taxes payable and accrued liabilities	9,154	(385)
Net cash provided by operating activities	85,312	66,455
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(17,346)	(14,241)
Proceeds from sale of property and equipment	150	0
Purchases of marketable securities	(58,775)	(97,581)
Proceeds from sales and maturities of marketable securities	116,658	103,806
Acquisition (Note 15)	0	(9,520)
Net cash provided by (used in) investing activities	40,687	(17,536)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock under employee stock plans	5,326	5,700
Repurchase of common stock	(98,098)	(25,979)
Payments of dividends to stockholders	(35,553)	(34,100)
Proceeds from draw on line of credit	13,000	0
Payments on line of credit	(13,000)	0
Net cash used in financing activities	(128,325)	(54,379)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(2,326)	(5,460)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	50,972	63,929
CASH AND CASH EQUIVALENTS AT END OF PERIOD	48,646	58,469
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Unpaid property and equipment	4,349	1,535
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for income taxes, net	$ 2,731	$ 4,400