Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net income (loss)	$ (640)	$ 4,057	$ 3,105
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation expense	25,925	25,047	21,484
Depreciation and amortization	4,085	3,628	4,986
Amortization of acquired intangible assets	7,255	3,231	3,551
Amortization of costs capitalized to obtain revenue contracts	3,155	2,674	2,142
Net accretion of discounts on short-term investments	(279)	(1,542)	(1,174)
Loss on damaged equipment in-transit, net of (recovery) from previously written-off property and equipment	(641)	586	0
Deferred taxes	895	(74)	(108)
Other	(103)	2,386	(198)
Changes in operating assets and liabilities:
Accounts receivable	(6,343)	(28,800)	(2,748)
Prepaid expenses and other current assets	(16,361)	(2,033)	(7,329)
Operating lease right-of-use assets	1,589	1,580	1,205
Other non-current assets	6,574	(3,577)	(4,166)
Accounts payable	4,882	2,791	(2,145)
Accrued compensation and related benefits	5,255	2,288	(2,188)
Accrued and other liabilities	(2,630)	1,780	110
Deferred revenues	(6,866)	(2,629)	(640)
Operating lease liabilities	(1,699)	(1,690)	(1,287)
Net cash provided by operating activities	24,053	9,703	14,600
Cash flows from investing activities:
Proceeds from maturities and sales of short-term investments	27,498	68,125	43,800
Purchases of short-term investments	(2,937)	(54,331)	(59,598)
Purchase of convertible promissory note	0	(2,000)	0
Purchases of property and equipment	(32,631)	(17,155)	(11,236)
Prepayment for the purchase of property and equipment	(214)	(630)	(89)
Proceeds from sale and recovery from previously written-off property and equipment	641	55	105
Purchases of intangible assets	0	0	(150)
Payment for business acquisition, net of cash acquired	(129,718)	0	(1,823)
Net cash used in investing activities	(137,361)	(5,936)	(28,991)
Cash flows from financing activities:
Proceeds from long-term debt, net of debt discount	69,550	0	0
Payments of debt issuance costs	(900)	0	0
Repayments of long-term debt	(1,875)	0	0
Proceeds from exercise of stock options and employee stock purchase plan	4,244	4,196	4,324
Payments for taxes related to net share settlement of equity awards	(6,212)	(8,530)	(9,471)
Repurchases of common stock	(244)	(6,899)	(743)
Net cash provided by (used in) financing activities	64,563	(11,233)	(5,890)
Net change in cash and cash equivalents	(48,374)	(8,384)	(20,646)
Cash and cash equivalents at beginning of year	90,594	98,978	119,624
Cash and cash equivalents at end of year	42,220	90,594	98,978
Effect of exchange rate changes on cash and cash equivalents	371	(918)	(365)
Supplemental disclosure of cash flow information:
Income taxes	2,701	2,562	3,783
Amounts included in the measurement of operating lease liabilities	1,960	1,784	1,648
Interest on long-term debt	3,720	0	0
Supplemental disclosure of noncash information:
Prepayments for purchase of property and equipment transferred from prepaid assets to property and equipment	505	89	66
Property and equipment received and accrued in accounts payable and accrued and other current liabilities	12,291	7,272	1,599
Net carrying value of property and equipment sold and expensed in cost of revenues, and property and equipment transferred to sales-type leases and from other non-current assets, net	3,242	7,157	8,076
Stock-based compensation capitalized as property and equipment	432	364	72
Operating lease liabilities arising from obtaining right-of-use assets	$ 2,292	$ 718	$ 131