Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating activities:
Consolidated net income	$ 16,583	$ 1,795	$ 44,936	$ 17,365
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization			13,202	10,250
Stock-based compensation expense	3,458	2,829	9,287	7,445
Provision for doubtful accounts			43	5
Litigation-related expense	0	6,500	0	6,500
Amortization of Bond Premium			0	1,027
Credit gain on available-for-sale securities	0	(1)	0	(3)
Increase in long-term deferred revenue			1,235	1,420
Increase in other assets			(260)	(1,451)
Deferred income taxes			(61)	(52)
Decrease in long-term income taxes payable			(14)	(40)
Change in current assets and liabilities, net			(15,374)	(20,456)
Net cash provided by operating activities			52,994	22,010
Investing activities:
Sales or maturities of short-term investments			0	25,000
Additions to property, plant and equipment and internal-use software			(26,289)	(51,279)
Net cash used for investing activities			(26,289)	(26,279)
Financing activities:
Proceeds from employee stock plans			10,503	4,147
Net cash provided by financing activities			10,503	4,147
Effect of foreign exchange rates on cash			(35)	(198)
Net increase (decrease) in cash and cash equivalents			37,173	(320)
Cash and cash equivalents at beginning of period			190,611	182,418
Cash and cash equivalents at end of period	$ 227,784	$ 182,098	$ 227,784	$ 182,098