CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 3,518	$ 2,218
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization	2,895	3,778
Stock-based compensation expense	18,540	15,561
Amortization of acquired intangible assets	2,466	2,659
Amortization of costs capitalized to obtain revenue contracts	1,941	1,494
Net accretion of discounts on short-term investments	(1,239)	(734)
Accretion of unguaranteed residual assets	(488)	(51)
Deferred taxes	(35)	43
Other	(68)	(55)
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]
Accounts receivable	(1,743)	1,185
Prepaid expenses and other current assets	(8,831)	(7,038)
Operating lease right-of-use assets	1,241	904
Other non-current assets	(11,478)	(928)
Accounts payable	2,995	(2,697)
Accrued compensation and related benefits	(1,608)	(5,342)
Accrued and other liabilities	(16)	393
Deferred revenues	2,771	3,681
Billings in excess of recognized revenues	(1,479)	(1,612)
Operating lease liabilities	(1,285)	(888)
Net cash provided by (used in) operating activities	8,097	12,571
Net Cash Provided by (Used in) Investing Activities [Abstract]
Proceeds from maturities and sales of short-term investments	57,125	28,800
Purchases of short-term investments	(43,054)	(32,250)
Purchase of convertible promissory note	(2,000)
Proceeds from sale of property and equipment	55	105
Purchases of property and equipment	(11,573)	(8,574)
Prepayment for the purchase of property and equipment	(365)	(343)
Purchases of intangible assets		(150)
Payment for business acquisition, net of cash acquired		(1,823)
Net cash provided by (used in) investing activities	188	(14,235)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from exercise of stock options	114	469
Proceeds from employee stock purchase plan	4,073	3,832
Payments for taxes related to net share settlement of equity awards	(8,196)	(9,135)
Repurchases of common stock	(6,899)	(743)
Net cash used in financing activities	(10,908)	(5,577)
Effect of exchange rate changes on cash and cash equivalents	73	(763)
Net change in cash and cash equivalents	(2,550)	(8,004)
Cash and cash equivalents at beginning of period	98,978	119,624
Cash and cash equivalents at end of period	96,428	111,620
Supplemental Cash Flow Information [Abstract]
Cash paid during the year for income taxes	2,064	3,568
Cash paid for amounts included in the measurement of operating lease liabilities	1,290	1,160
Noncash Investing and Financing Items [Abstract]
Property and equipment received and accrued in accounts payable and accrued and other liabilities	4,774	697
Advances for purchase of fixed assets transferred from prepaid assets to property and equipment	89	66
Operating lease liabilities arising from obtaining right-of-use assets	679
Property and equipment transferred to sales-type lease	4,021	$ 6,002
Stock-based compensation capitalized as a part of the cost of property and equipment	$ 233