Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities
Net income	$ 59,955	$ 102,460
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,824	7,636
Deferred income taxes	(4,155)	(2,013)
Stock-based compensation expense	10,324	10,159
Provision for doubtful accounts		(459)
Provision for excess and obsolete inventory	1,742	2,846
Accretion of discounts and premiums on short-term and long-term investments	(2,254)	(6,623)
Unrealized currency (gain) loss on foreign denominated transactions	(6,807)	11,505
Mark-to-market adjustment on forward exchange contracts	457
Changes in operating assets and liabilities:
Accounts receivable	67,459	25,009
Inventories	(16,760)	12,951
Prepaid expenses and other current assets	1,175	(5,849)
Accounts payable and other current liabilities	(28,343)	(18,541)
Deferred revenue	(9,581)	(35,957)
Income taxes	1,966	(8,391)
Other assets and liabilities	(4,480)	(12,443)
Net cash provided by operating activities	79,522	82,290
Cash flows from investing activities
Expenditures for property, plant and equipment and capitalized software	(6,945)	(3,624)
Purchase of short-term and long-term investments	(345,174)	(249,015)
Maturities and sales of short-term investments	387,975	191,345
Net cash provided by (used in) investing activities	35,856	(61,294)
Cash flows from financing activities
Net settlement on restricted stock grants	(4,152)	(11,167)
Repurchase of common stock	(63,515)	(29,995)
Proceeds from Employee Stock Purchase Plan purchases	1,246	1,242
Principal payments on finance lease obligation	(676)	(736)
Net cash used in financing activities	(67,097)	(40,656)
Effect of exchange rate changes on cash and cash equivalents	1,935	(2,474)
Net increase (decrease) in cash, cash equivalents and restricted cash	50,216	(22,134)
Cash, cash equivalents and restricted cash at beginning of period	131,064	173,951
Cash, cash equivalents and restricted cash at end of period	$ 181,280	$ 151,817