Bandwidth (BAND) 10-Q 2 Nov 22 2022 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2022	Oct. 31, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Annual Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-38285
Entity Registrant Name	BANDWIDTH INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	56-2242657
Entity Address, Address Line One	900 Main Campus Drive
Entity Address, City or Town	Raleigh
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27606
City Area Code	(800)
Local Phone Number	808-5150
Title of 12(b) Security	Class A Common Stock, par value $0.001 per share
Trading Symbol	BAND
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001514416
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Class A voting common stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		23,359,265
Class B voting common stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		1,965,170

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 166,384	$ 331,453
Restricted cash	918	836
Marketable securities	145,171	0
Accounts receivable, net of allowance for doubtful accounts	76,597	61,572
Deferred costs	3,772	3,204
Prepaid expenses and other current assets	24,273	15,820
Total current assets	417,115	412,885
Property, plant and equipment, net	73,205	69,604
Operating right-of-use asset, net	11,251	14,061
Intangible assets, net	170,498	211,217
Deferred costs, non-current	5,145	4,676
Other long-term assets	32,293	8,673
Goodwill	298,892	344,423
Total assets	1,008,399	1,065,539
Current liabilities:
Accounts payable	21,034	9,142
Accrued expenses and other current liabilities	75,053	65,921
Current portion of deferred revenue	6,233	6,248
Advanced billings	7,672	6,380
Operating lease liability, current	7,166	5,807
Total current liabilities	117,158	93,498
Other liabilities	9,601	6,018
Operating lease liability, net of current portion	6,426	10,958
Deferred revenue, net of current portion	8,155	7,634
Deferred tax liability	35,215	48,396
Convertible senior notes	637,248	486,440
Total liabilities	813,803	652,944
Stockholders’ equity:
Class A and Class B common stock	25	25
Additional paid-in capital	359,465	502,477
Accumulated deficit	(81,981)	(76,867)
Accumulated other comprehensive loss	(82,913)	(13,040)
Total stockholders’ equity	194,596	412,595
Total liabilities and stockholders’ equity	$ 1,008,399	$ 1,065,539

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 148,325	$ 130,638	$ 416,178	$ 364,775
Cost of revenue	84,861	73,573	241,896	203,071
Gross profit	63,464	57,065	174,282	161,704
Operating expenses:
Research and development	25,044	16,857	71,735	50,036
Sales and marketing	23,184	21,143	69,663	60,458
General and administrative	16,623	18,127	50,191	49,375
Total operating expenses	64,851	56,127	191,589	159,869
Operating (loss) income	(1,387)	938	(17,307)	1,835
Other (expense) income, net	(338)	(7,567)	2,282	(20,768)
Loss before income taxes	(1,725)	(6,629)	(15,025)	(18,933)
Income tax benefit (provision)	923	(315)	1,161	(255)
Net loss	$ (802)	$ (6,944)	$ (13,864)	$ (19,188)
Net loss per share, basic and diluted
Basic (in usd per share)	$ (0.03)	$ (0.28)	$ (0.55)	$ (0.77)
Diluted (in usd per share)	$ (0.03)	$ (0.28)	$ (0.55)	$ (0.77)
Weighted average number of common shares outstanding, basic and diluted
Weighted average number of common shares outstanding, basic (in shares)	25,304,057	25,114,762	25,268,216	25,075,941
Weighted average number of common shares outstanding, diluted (in shares)	25,304,057	25,114,762	25,268,216	25,075,941

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (802)	$ (6,944)	$ (13,864)	$ (19,188)
Other comprehensive loss
Unrealized gain on marketable securities, net of income taxes	458	0	120	0
Foreign currency translation, net of income taxes	(29,702)	(12,512)	(69,993)	(29,682)
Other comprehensive loss	(29,244)	(12,512)	(69,873)	(29,682)
Total comprehensive loss	$ (30,046)	$ (19,456)	$ (83,737)	$ (48,870)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Adjustment to opening retained earnings due to adoption of ASU 2020-06	Class A voting common stock	Class B voting common stock	Common stock Class A voting common stock	Common stock Class B voting common stock	Additional paid-in capital	Additional paid-in capital Adjustment to opening retained earnings due to adoption of ASU 2020-06	Accumulated other comprehensive (loss) income	Accumulated deficit	Accumulated deficit Adjustment to opening retained earnings due to adoption of ASU 2020-06
Beginning balance (in shares) at Dec. 31, 2020					22,413,004	2,496,125
Beginning balance at Dec. 31, 2020	$ 429,923				$ 22	$ 2	$ 451,463		$ 27,941	$ (49,505)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of debt conversion option	66,908						66,908
Debt conversion option issuance costs, net of tax	(2,049)						(2,049)
Capped call option purchase price	(25,500)						(25,500)
Exercises of vested stock options (in shares)					57,817
Exercises of vested stock options	753						753
Vesting of restricted stock units (in shares)					141,707
Equity awards withheld for tax liability (in shares)					(19,879)
Equity awards withheld for tax liability	(3,187)						(3,187)
Conversion of Class B voting common stock to Class A voting common stock (in shares)					(280,955)	(280,955)
Conversion of Class B voting common stock to Class A voting common stock	1				$ 1
Foreign currency translation	(23,185)								(23,185)
Stock-based compensation	4,390						4,390
Net loss	(5,316)									(5,316)
Ending balance (in shares) at Mar. 31, 2021					22,873,604	2,215,170
Ending balance at Mar. 31, 2021	442,738				$ 23	$ 2	492,778		4,756	(54,821)
Beginning balance (in shares) at Dec. 31, 2020					22,413,004	2,496,125
Beginning balance at Dec. 31, 2020	429,923				$ 22	$ 2	451,463		27,941	(49,505)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized loss on marketable securities	0
Net loss	(19,188)
Ending balance (in shares) at Sep. 30, 2021					23,165,119	1,965,170
Ending balance at Sep. 30, 2021	$ 429,329				$ 23	$ 2	499,738		(1,741)	(68,693)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update	Accounting Standards Update 2020-06
Beginning balance (in shares) at Dec. 31, 2020					22,413,004	2,496,125
Beginning balance at Dec. 31, 2020	$ 429,923				$ 22	$ 2	451,463		27,941	(49,505)
Ending balance (in shares) at Dec. 31, 2021			23,177,988	1,965,170	23,177,988	1,965,170
Ending balance at Dec. 31, 2021	412,595	$ (147,498)			$ 23	$ 2	502,477	$ (156,248)	(13,040)	(76,867)	$ 8,750
Beginning balance (in shares) at Mar. 31, 2021					22,873,604	2,215,170
Beginning balance at Mar. 31, 2021	442,738				$ 23	$ 2	492,778		4,756	(54,821)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Debt conversion option issuance costs, net of tax	30						30
Exercises of vested stock options (in shares)					4,406
Exercises of vested stock options	46						46
Vesting of restricted stock units (in shares)					15,605
Equity awards withheld for tax liability (in shares)					(1,948)
Equity awards withheld for tax liability	(265)						(265)
Foreign currency translation	6,015								6,015
Stock-based compensation	3,377						3,377
Net loss	(6,928)									(6,928)
Ending balance (in shares) at Jun. 30, 2021					22,891,667	2,215,170
Ending balance at Jun. 30, 2021	445,013				$ 23	$ 2	495,966		10,771	(61,749)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of vested stock options (in shares)					8,700
Exercises of vested stock options	101						101
Vesting of restricted stock units (in shares)					16,383
Equity awards withheld for tax liability (in shares)					(1,631)
Equity awards withheld for tax liability	(154)						(154)
Conversion of Class B voting common stock to Class A voting common stock (in shares)					(250,000)	(250,000)
Conversion of Class B voting common stock to Class A voting common stock	0
Foreign currency translation	(12,512)								(12,512)
Stock-based compensation	3,825						3,825
Net loss	(6,944)									(6,944)
Ending balance (in shares) at Sep. 30, 2021					23,165,119	1,965,170
Ending balance at Sep. 30, 2021	429,329				$ 23	$ 2	499,738		(1,741)	(68,693)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of vested stock options (in shares)					3,062
Exercises of vested stock options	23						23
Vesting of restricted stock units (in shares)					12,807
Equity awards withheld for tax liability (in shares)					(3,000)
Equity awards withheld for tax liability	(229)						(229)
Foreign currency translation	(11,468)								(11,468)
Unrealized gain/loss on employee benefit pension plan	169								169
Stock-based compensation	2,945						2,945
Net loss	(8,174)									(8,174)
Ending balance (in shares) at Dec. 31, 2021			23,177,988	1,965,170	23,177,988	1,965,170
Ending balance at Dec. 31, 2021	412,595	(147,498)			$ 23	$ 2	502,477	(156,248)	(13,040)	(76,867)	8,750
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of vested stock options (in shares)					16,095
Exercises of vested stock options	125						125
Vesting of restricted stock units (in shares)					144,977
Equity awards withheld for tax liability (in shares)					(30,029)
Equity awards withheld for tax liability	(1,751)						(1,751)
Foreign currency translation	(10,516)								(10,516)
Stock-based compensation	5,346						5,346
Net loss	(6,814)									(6,814)
Ending balance (in shares) at Mar. 31, 2022					23,309,031	1,965,170
Ending balance at Mar. 31, 2022	251,487				$ 23	$ 2	349,949		(23,556)	(74,931)
Beginning balance (in shares) at Dec. 31, 2021			23,177,988	1,965,170	23,177,988	1,965,170
Beginning balance at Dec. 31, 2021	$ 412,595	$ (147,498)			$ 23	$ 2	502,477	$ (156,248)	(13,040)	(76,867)	$ 8,750
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of vested stock options (in shares)	20,382
Unrealized loss on marketable securities	$ (120)
Net loss	(13,864)
Ending balance (in shares) at Sep. 30, 2022			23,358,203	1,965,170	23,358,203	1,965,170
Ending balance at Sep. 30, 2022	194,596				$ 23	$ 2	359,465		(82,913)	(81,981)
Beginning balance (in shares) at Mar. 31, 2022					23,309,031	1,965,170
Beginning balance at Mar. 31, 2022	251,487				$ 23	$ 2	349,949		(23,556)	(74,931)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercises of vested stock options (in shares)					4,287
Exercises of vested stock options	37						37
Vesting of restricted stock units (in shares)					28,351
Equity awards withheld for tax liability (in shares)					(7,005)
Equity awards withheld for tax liability	(145)						(145)
Unrealized loss on marketable securities	(338)								(338)
Foreign currency translation	(29,775)								(29,775)
Stock-based compensation	4,821						4,821
Net loss	(6,248)									(6,248)
Ending balance (in shares) at Jun. 30, 2022					23,334,664	1,965,170
Ending balance at Jun. 30, 2022	219,839				$ 23	$ 2	354,662		(53,669)	(81,179)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock units (in shares)					30,395
Equity awards withheld for tax liability (in shares)					(6,856)
Equity awards withheld for tax liability	(89)						(89)
Unrealized loss on marketable securities	458								458
Foreign currency translation	(29,702)								(29,702)
Stock-based compensation	4,892						4,892
Net loss	(802)									(802)
Ending balance (in shares) at Sep. 30, 2022			23,358,203	1,965,170	23,358,203	1,965,170
Ending balance at Sep. 30, 2022	$ 194,596				$ 23	$ 2	$ 359,465		$ (82,913)	$ (81,981)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net loss	$ (13,864)	$ (19,188)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	26,866	27,478
Non-cash reduction to the right-of-use asset	5,308	4,251
Amortization of debt discount and issuance costs	2,343	19,475
Stock-based compensation	15,059	11,592
Deferred taxes and other	(5,496)	686
Changes in operating assets and liabilities:
Accounts receivable, net of allowances	(18,311)	(20,610)
Prepaid expenses and other assets	(13,389)	(4,173)
Accounts payable	14,305	7,122
Accrued expenses and other liabilities	17,142	1,590
Operating right-of-use liability	(5,623)	(4,535)
Net cash provided by operating activities	24,340	23,688
Cash flows from investing activities
Purchase of property and equipment	(18,669)	(9,552)
Deposits for construction in progress	(14,545)	(3,000)
Capitalized software development costs	(2,121)	(3,212)
Purchase of land	0	(30,017)
Proceeds from sale of land	0	17,462
Purchase of marketable securities	(178,153)	0
Proceeds from sales and maturities of marketable securities	33,102	0
Proceeds from sales and maturities of other investments	0	40,000
Net cash (used in) provided by investing activities	(180,386)	11,681
Cash flows from financing activities
Payments on finance leases	(162)	(161)
Proceeds from issuance of convertible senior notes	0	250,000
Purchase of Capped Call	0	(25,500)
Payment of debt issuance costs	(553)	(7,544)
Proceeds from exercises of stock options	162	886
Value of equity awards withheld for tax liabilities	(2,047)	(3,720)
Net cash (used in) provided by financing activities	(2,600)	213,961
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(6,341)	291
Net (decrease) increase in cash, cash equivalents, and restricted cash	(164,987)	249,621
Cash, cash equivalents, and restricted cash, beginning of period	332,289	81,437
Cash, cash equivalents, and restricted cash, end of period	167,302	331,058
Supplemental disclosure of cash flow information
Cash paid for interest	1,328	674
Cash paid for taxes, net	899	961
Right-of-use assets obtained in exchange for new operating lease liabilities	3,322	553
Supplemental disclosure of noncash investing and financing activities
Purchase of property and equipment, accrued but not paid	2,133	7,611
Obligation included in basis of acquired land	0	7,752
Lease incentive	3,807	3,193
Obligation included in basis of land acquired by the Developer	0	4,512
Equity awards withheld for tax liabilities, accrued but not paid	65	132
Unrealized gain on marketable securities, accrued but not realized	$ 120	$ 0

Organization and Description of

Organization and Description of Business	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	1. Organization and Description of Business Bandwidth Inc. (together with its subsidiaries, “Bandwidth” or the “Company”) was founded in July 2000 and incorporated in Delaware on March 29, 2001. The Company’s headquarters are located in Raleigh, North Carolina. The Company is an international cloud-based, software-powered communications platform-as-a-service (“CPaaS”) provider that enables enterprises to create, scale and operate voice or messaging communications services across any mobile application or connected device.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Certain information and disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K filed with the SEC on February 25, 2022. The condensed consolidated balance sheet as of December 31, 2021, included herein, was derived from the audited financial statements as of that date, but does not include all disclosures, including certain notes required by GAAP on an annual reporting basis. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, comprehensive loss and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year 2022 or any future period. Cost Alignment During the quarter ended March 31, 2022, the Company changed its presentation of certain costs to align with benchmarked definitions of cost of revenue, research and development, sales and marketing, and general and administrative expenses. As part of the benchmarked definitions, the Company has included allocations of facilities and shared IT costs based on employee headcount within the cost of revenue, research and development, sales and marketing, and general and administrative expense categories. Additionally, the product management function is now included in research and development rather than general and administrative as previously reported and the customer billing and collections function and the amortization of acquired customer relationship intangible assets are now included in sales and marketing rather than general and administrative as previously reported. Management believes use of the benchmarked definitions will increase comparability to peers and therefore usability of its financial statements. All periods presented have been conformed to the current definitions of cost of revenue, research and development, sales and marketing, and general and administrative expenses. There was no impact to revenue or net income for any periods presented. The condensed consolidated balance sheets, condensed consolidated statements of changes in stockholders’ equity and condensed consolidated statements of cash flows are not affected by these changes. The following is a comparison of the change in costs to the prior period: Three months ended September 30, 2021 Nine months ended September 30, 2021 As reported As previously reported As reported As previously reported (In thousands) Statement of Operations Cost of revenue $ 73,573 $ 72,395 $ 203,071 $ 199,782 Research and development 16,857 13,359 50,036 39,509 Sales and marketing 21,143 13,592 60,458 38,168 General and administrative 18,127 30,354 49,375 85,481 Principles of Consolidation The condensed consolidated financial statements include the accounts of Bandwidth Inc. and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of the Company’s condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the amounts reported in these financial statements and accompanying notes. These estimates in the condensed consolidated financial statements include, but are not limited to, allowance for doubtful accounts, reserve for expected credit losses, reserve for sales credits, recoverability of long lived and intangible assets, fair value of acquired intangible assets and goodwill, discount rates used in the valuation of right-of-use assets and lease liabilities, the fair value of the liability of the Company’s Convertible Notes (as defined herein), estimated period of benefit, valuation allowances on deferred tax assets, certain accrued expenses and contingencies, economic and demographic actuarial assumptions related to pension and other postretirement benefit costs and liabilities, estimated cash flows on asset retirement obligation. Although the Company believes that the estimates it uses are reasonable, due to the inherent uncertainty involved in making these estimates, actual results reported in future periods could differ from those estimates. Cash and Cash Equivalents The Company classifies all highly liquid investments with original stated maturities of three months or less from the date of purchase as cash equivalents. All highly liquid investments with original stated maturities of greater than three months from the date of purchase are classified as current marketable securities. Cash deposits are primarily in financial institutions in the United States. However, cash for monthly operating costs of international operations are deposited in banks outside the United States. The Company has a policy of making investments only with commercial institutions that have at least an investment grade credit rating. The Company utilizes money market funds as an investment option and only invests in AAA rated funds. Restricted Cash Restricted cash consists primarily of employee withholding tax liability and employee benefits contributions not yet remitted. The Company has classified this asset as a short-term asset in order to match the expected period of restriction. Marketable Securities The Company’s marketable securities consist of time deposits, U.S. treasury debt securities, commercial paper, and corporate debt securities. The Company classifies marketable securities as available-for-sale at the time of purchase and reevaluates such classification as of each balance sheet date. The Company may sell these securities at any time for use in current operations even if they have not yet reached maturity. As a result, the Company classifies investments with maturities greater than 90 days as marketable securities in the accompanying condensed consolidated balance sheets. Available-for-sale securities are recorded at fair value at the end of each reporting period. Unrealized gains and losses are excluded from earnings and recorded as a separate component within accumulated other comprehensive loss on the condensed consolidated balance sheets until realized. Interest income is reported within other (expense) income, net on the condensed consolidated statements of operations. The Company evaluates its investments to assess whether the amortized cost basis is in excess of estimated fair value and determines what amount of that difference, if any, is caused by expected credit losses. Allowance for credit losses are recognized as a charge in other (expense) income, net on the condensed consolidated statements of operations, and any remaining unrealized losses are included in accumulated other comprehensive loss on the condensed consolidated balance sheets. Due to the nature and investment grade of the Company’s marketable securities, there were no credit losses recorded for the three and nine months ended September 30, 2022. There have been no impairment charges for any unrealized losses during the period. The Company determines realized gains and losses on the sale of marketable securities using the specific identification method and records such gains and losses in other (expense) income, net on the condensed consolidated statements of operations. Accounts Receivable and Current Expected Credit Losses Accounts receivable are stated at realizable value, net of allowances, which includes an allowance for doubtful accounts and a reserve for expected credit losses. The allowance for doubtful accounts is based on management’s assessment of the collectability of its customer accounts. The Company regularly reviews the composition of the accounts receivable aging, historical bad debts, changes in payment patterns, customer creditworthiness, current economic trends, and reasonable and supportable forecasts about the future. Relevant risk characteristics include customer size and historical loss patterns. Management has evaluated the expected credit losses related to trade accounts receivable and determined that an allowance of approximately $0.8 million and $1.7 million for uncollectible accounts and customer balances that are disputed was required as of September 30, 2022 and December 31, 2021, respectively. Refer to Note 4, “Financial Statement Components” to these condensed consolidated financial statements, for a rollforward of the components of the allowances as of September 30, 2022 and December 31, 2021. The Company includes unbilled receivables in its accounts receivable balance. Generally, these receivables represent earned revenue from services provided to customers, which will be billed in the next billing cycle. All amounts are considered collectible and billable. As of September 30, 2022 and December 31, 2021, unbilled receivables were $40.4 million and $31.8 million, respectively. Concentration of Credit Risk Financial instruments that are exposed to concentration of credit risk consist primarily of cash and cash equivalents, marketable securities and trade accounts receivable. Cash deposits may be in excess of insured limits. The Company believes that the financial institutions that hold its cash deposits are financially sound and, accordingly, minimal credit risk exists with respect to these balances. With regard to customers, credit evaluation and account monitoring procedures are used to minimize the risk of loss. The Company believes that no additional credit risk beyond amounts provided for by the allowance for doubtful accounts are inherent in accounts receivable. As of September 30, 2022, no individual customer represented more than 10% of the Company’s accounts receivable, net of allowance for doubtful accounts. As of December 31, 2021, one individual customer represented approximately 10%, respectively, of the Company’s accounts receivable, net of allowance for doubtful accounts. For the three and nine months ended September 30, 2022 and 2021, no individual customer represented more than 10% of the Company’s revenue. Debt Issuance Costs The Company incurs debt issuance costs associated with obtaining and entering into credit agreements and issuing convertible notes. These costs customarily include non-refundable structuring fees, commitment fees, up-front fees and syndication expenses. The Company has a policy of deferring and amortizing these costs based on the effective interest method over the term of the credit agreements or the convertible notes, as applicable. Goodwill In accordance with Accounting Standards Codification (“ASC”) 350, “Intangibles - Goodwill and Other” (“ASC 350”), goodwill is not amortized, but rather is reviewed for impairment at the reporting unit level on the last day of the Company’s fourth quarter of each fiscal year, or when there is evidence that events or changes in circumstances indicate that the fair value of the reporting unit is less than the carrying amount of the reporting unit, including goodwill. The Company establishes its reporting units based on its current organizational structure and management’s view of the business. The Company has determined it has one reporting unit. Under ASC 350, the Company has the option to first assess qualitatively whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. In performing qualitative assessments, consistent with ASC 350-20-35-3C, the Company considers, among other factors, macroeconomic conditions (both in the United States and internationally), the Company’s overall financial performance (including, but not limited to, comparisons to prior periods, current period internal expectations, and comparable peer companies), broader industry and market considerations, and the trading price performance of the Company’s Class A common stock. As of September 30, 2022 and December 31, 2021, the Company has recorded goodwill of $298.9 million and $344.4 million, respectively. During the third quarter of 2022, the Company completed an interim qualitative assessment under ASC 350 to determine whether the existence of events or circumstances indicated that it was more likely than not that the fair value of its reporting unit was less than its respective carrying value. The Company concluded that based on the relevant events and circumstances, it was more likely than not that the reporting unit’s fair value exceeded its related carrying value and therefore no quantitative assessment was required. No goodwill impairment charges were recorded for the three and nine months ended September 30, 2022 and 2021. Recently Adopted Accounting Standards In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) , which is intended to address issues identified as a result of the complexity associated with applying GAAP for certain financial instruments with characteristics of liabilities and equity. For convertible instruments, ASU 2020-06 reduces the number of accounting models for convertible debt instruments and convertible preferred stock, and enhances information transparency by making targeted improvements to the disclosures for convertible instruments and EPS guidance on the basis of feedback from financial statement users. ASU 2020-06 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2021. Early adoption was permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The Company adopted the new guidance on January 1, 2022 using the modified retrospective approach resulting in decreases in accumulated deficit of $8.8 million, additional paid in capital of $156.2 million, and deferred tax liability of $1.0 million. The Company also recorded an increase in the convertible notes balance of $148.4 million as a result of the reversal of the separation of the convertible debt between debt and equity. The adoption of this standard decreased the amount of non-cash interest expense to be recognized in current and future periods as a result of eliminating the discount associated with the equity component. For the three and nine months ended September 30, 2022, the combined interest expense of the Convertible Notes was $6.9 million and $20.3 million lower, respectively, upon the adoption of ASU 2020-06. The number of diluted shares increased as a result of transitioning from the treasury stock method to the as-if converted method, but did not change the earnings per share for the three and nine months ended September 30, 2022 and 2021 as the Company incurred a net loss in both reporting periods. In May 2021, the FASB issued ASU 2021-04, Earnings Per Share (Topic 260), Debt —Modifications and Extinguishments (Subtopic 470-50), Compensation--Stock Compensation (Topic 718), and Derivatives and Hedging--Contracts in Entity’s Own Equity (Subtopic 815-40) , which is intended to provide clarity surrounding the treatment for a modification or an exchange of a freestanding equity-classified written call option. The amendments also provide guidance for the recognition and measurement of earnings-per-share (“EPS”) for certain modifications or exchanges of freestanding equity-classified written call options for entities that present EPS. The amendments do not affect a holder’s accounting for freestanding call options. ASU 2021-04 is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. Early adoption was permitted, including adoption in an interim period. The Company adopted the new guidance on January 1, 2022. The Company did not have any modifications or exchanges of freestanding written call options classified in equity during the reporting period and therefore did not have an impact on its financial statements. Recent Accounting Pronouncements Not Yet Adopted The Company did not have any applicable recent accounting pronouncements not yet adopted.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	3. Fair Value Measurements The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate fair value as of September 30, 2022 and December 31, 2021 because of the relatively short duration of these instruments. Marketable securities consist of time deposits, corporate debt securities, U.S. treasury securities, and commercial paper not otherwise classified as cash equivalents. All marketable securities are considered to be available-for-sale and are recorded at their estimated fair values. Unrealized gain and losses for available-for-sale securities are recorded in other comprehensive loss. The Company evaluated its financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level in which to classify them for each reporting period. The following tables summarize the assets measured at fair value as of September 30, 2022 and December 31, 2021: Amortized cost or carrying value Unrealized gains Unrealized losses Fair value measurements on a recurring basis Level 1 Level 2 Level 3 Total (In thousands) Financial assets: Cash and cash equivalents: Money market account $ 45,505 $ — $ — $ 45,505 $ — $ — $ 45,505 Commercial paper 30,819 — — 30,819 — — 30,819 Total included in cash and cash equivalents $ 76,324 $ — $ — $ 76,324 $ — $ — $ 76,324 Marketable securities: Time deposits $ 10,683 $ — $ (17) $ 10,666 $ — $ — $ 10,666 U.S. treasury securities 20,368 — (21) 20,347 — — 20,347 Corporate debt securities 43,221 — (235) — 42,986 — 42,986 Commercial paper 70,779 393 — 71,172 — — 71,172 Total marketable securities $ 145,051 $ 393 $ (273) $ 102,185 $ 42,986 $ — $ 145,171 Total financial assets $ 221,375 $ 393 $ (273) $ 178,509 $ 42,986 $ — $ 221,495 Fair value measurements on a recurring basis Level 1 Level 2 Level 3 Total (In thousands) Financial assets: Cash and cash equivalents: Money market account $ 241,157 $ — $ — $ 241,157 Total financial assets $ 241,157 $ — $ — $ 241,157 The Company classifies its marketable securities as current assets as they are available for current operating needs. The following table summarizes the contractual maturities of marketable securities as of September 30, 2022: Amortized cost Aggregate fair value (In thousands) Financial assets: Less than one year $ 145,051 $ 145,171 Total $ 145,051 $ 145,171 As of September 30, 2022, the marketable securities were in an unrealized gain position. The Company has determined that (i) it does not have the intent to sell any of these investments, and (ii) it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. As of September 30, 2022, the Company anticipates that it will recover the entire amortized cost basis of its marketable securities before maturity. During the three and nine months ended September 30, 2022, there were $33.1 million in maturities of marketable securities. Interest earned on marketable securities was $0.4 million and $0.6 million in the three and nine months ended September 30, 2022, respectively. The interest is recorded in other (expense) income, net, on the accompanying condensed consolidated statements of operations. As of September 30, 2022, the accrued interest receivable, net of allowance for credit losses, was $0.4 million. Accrued interest receivable is recorded in prepaid expenses and other current assets on the accompanying condensed consolidated balance sheet. As of September 30, 2022, the fair value of the 2026 Convertible Notes and 2028 Convertible Notes, as further described in Note 8, “Debt”, was approximately $260.6 million and $147.9 million, respectively. As of December 31, 2021, the fair value of the 2026 Convertible Notes and the 2028 Convertible Notes was approximately $427.1 million and $194.2 million, respectively. The fair value was determined based on the closing price for the Convertible Notes on the last trading day of the reporting period and is considered as Level 2 in the fair value hierarchy.

Financial Statement Components

Financial Statement Components	9 Months Ended
	Sep. 30, 2022
Financial Statement Components [Abstract]
Financial Statement Components	4. Financial Statement Components Accounts receivable, net of allowances consist of the following: As of September 30, As of December 31, 2022 2021 (In thousands) Trade accounts receivable $ 36,963 $ 31,036 Unbilled accounts receivable 40,396 31,786 Allowance for doubtful accounts and reserve for expected credit losses (792) (1,661) Other accounts receivable 30 411 Total accounts receivable, net $ 76,597 $ 61,572 Components of allowance for doubtful accounts and reserve for expected credit losses are as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Allowance for doubtful accounts: Balance, beginning of period $ (945) $ (1,364) $ (1,661) $ (1,203) Charged to bad debt expense, net of reversals (117) (169) 64 (475) Deductions (1) 236 54 728 182 Impact of foreign currency translation 34 12 77 29 Balance, end of period $ (792) $ (1,467) $ (792) $ (1,467) ________________________ (1) Write-off of uncollectible accounts after all collection efforts have been exhausted. Accrued expenses and other current liabilities consisted of the following: As of September 30, As of December 31, 2022 2021 (In thousands) Accrued expense $ 32,609 $ 31,264 Accrued compensation and benefits 17,549 19,042 Accrued sales, use, VAT and telecommunications related taxes 17,327 11,046 Current portion of finance lease 121 177 Income tax payable 6,691 3,420 Other accrued expenses 756 972 Total accrued expenses and other current liabilities $ 75,053 $ 65,921

Right-of-Use Asset and Lease Li

Right-of-Use Asset and Lease Liabilities	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Right-of-Use Asset and Lease Liabilities	5. Right-of-Use Asset and Lease Liabilities Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The Company determines if an arrangement is a lease at inception. ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Operating lease expense attributable to lease payments is recognized on a straight-line basis over the lease term and is part of allocated facilities costs based on employee headcount within the cost of revenue, research and development, sales and marketing, and general and administrative expense categories on the Company’s condensed consolidated statements of operations. Finance leases result in the recognition of depreciation expense, which is recognized on a straight-line basis over the expected life of the leased asset, and interest expense, which is recognized following an effective interest rate method. Depreciation expense attributable to finance leases is included in operating expenses on the Company’s condensed consolidated statements of operations. The Company presents the operating leases in long-term assets and current and long-term liabilities in the accompanying condensed consolidated balance sheets. Finance leases are reported in property, plant and equipment, net, accrued expenses and other current liabilities, and other liabilities on the Company’s condensed consolidated balance sheets. The Company previously sub-leased approximately 17,073 square feet of office space to a related party, Relay, Inc. (f/k/a Republic Wireless, Inc.) (“Relay”). The lease term under this non-cancellable lease expired in July 2022. As of September 30, 2022, the Company had various leased properties in the United States and internationally, with remaining lease terms of one month to 4.25 years, some of which include options to extend the leases for up to 5 years. None of the options to extend the leases are recognized in operating lease ROU assets or lease liabilities. The Company has one lease with an early-termination option, which it does not expect to exercise. The components of lease expense recorded in the consolidated statement of operations were as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Operating lease cost $ 1,809 $ 1,699 $ 6,037 $ 5,002 Finance lease cost: Depreciation of assets 44 60 138 165 Interest on lease liabilities 3 5 10 14 Sublease income (14) (96) (206) (288) Total net lease cost $ 1,842 $ 1,668 $ 5,979 $ 4,893 During the three and nine months ended September 30, 2022, short-term operating lease expense was $0.2 million and $0.4 million, respectively. During the three and nine months ended September 30, 2021, short-term operating lease expense was $0.4 million and $1.1 million, respectively. Supplemental balance sheet information related to leases was as follows: As of September 30, As of December 31, Leases Classification 2022 2021 (In thousands) Assets: Operating lease assets Operating right-of-use asset, net (1) $ 11,251 $ 14,061 Finance lease assets Property, plant and equipment, net (2) 286 373 Total leased assets $ 11,537 $ 14,434 Liabilities: Current Operating Operating lease liability, current $ 7,166 $ 5,807 Finance Accrued expenses and other current liabilities 121 177 Non-current Operating Operating lease liability, net of current portion 6,426 10,958 Finance Other liabilities 156 202 Total lease liabilities $ 13,869 $ 17,144 ________________________ (1) Operating lease assets are recorded net of accumulated amortization of $17.5 million and $14.8 million as of September 30, 2022 and December 31, 2021, respectively. (2) Finance lease assets are recorded net of accumulated depreciation of $0.3 million and $0.2 million as of September 30, 2022 and December 31, 2021, respectively. Supplemental cash flow and other information related to leases was as follows: Nine months ended September 30, 2022 2021 (In thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 5,623 $ 4,535 Financing cash flows from finance leases 162 161 $ 5,785 $ 4,696 Weighted average remaining lease term (in years) Operating leases 2.28 3.14 Finance leases 2.48 2.56 Weighted average discount rate Operating leases 4.61 % 4.77 % Finance leases 4.50 % 4.00 % Maturities of lease liabilities were as follows: As of September 30, 2022 Operating Leases Finance Leases (In thousands) 2022 (remaining) $ 1,580 $ 30 2023 8,030 130 2024 2,560 86 2025 1,532 37 2026 599 11 Total lease payments 14,301 294 Less: imputed interest (709) (17) Total lease obligations 13,592 277 Less: current obligations (7,166) (121) Long-term lease obligations $ 6,426 $ 156 On June 4, 2021, the Company purchased approximately 40 acres of undeveloped land (the “Property”) in Raleigh, North Carolina, from the State of North Carolina (the “State”) for $30.0 million. Additionally, as consideration for the Property, the Company agreed to construct, at its expense, a parking lot and related improvements (the “Parking Improvements”) on land owned by the State adjacent to the Property. Subsequent to the purchase of the Property, the Company sold a portion of the Property constituting approximately 23.76 acres (the “Conveyed Parcel”) to USEF Edwards Mill Owner, LLC (the “Developer”) for $17.5 million. The Company retained approximately 17.06 acres of the Property, which was recorded at cost and is included in the Company’s condensed consolidated balance sheet as a component of property, plant and equipment, net. A lease incentive was recognized for the difference between the consideration received from the Developer for the Conveyed Parcel and the cost basis of the Conveyed Parcel and is included as a component of other liabilities on the condensed consolidated balance sheet. As of September 30, 2022, the balance of the lease incentive, including additional incentives obtained during project development, was $8.5 million. On May 27, 2021, the Company entered into a Lease Agreement (the “Lease”) with the Developer for the Conveyed Parcel, together with improvements for office and related infrastructure to be constructed thereon, collectively constituting approximately 534,000 gross square feet (the “Project”). The lease became effective upon closing of the sale of the Conveyed Parcel to the Developer. When construction of the Project is completed, the Company intends to relocate its corporate headquarters to the Project. The lease term will commence upon substantial completion of the final building to be delivered, as evidenced by a certificate of occupancy issued by the City of Raleigh (the “Commencement Date”), and continue for a period of twenty No ROU assets or lease liabilities have been recognized in connection with the lease as of September 30, 2022. Future lease payments are included in Note 12, “Commitments and Contingencies.”

Property, Plant and Equipment

Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	6. Property, Plant and Equipment Property, plant and equipment, net consisted of the following: As of September 30, As of December 31, 2022 2021 (In thousands) Furniture and fixtures $ 2,197 $ 2,240 Computer and office equipment 7,638 5,419 Telecommunications equipment 77,855 76,963 Leasehold improvements 6,212 6,970 Software 7,188 6,942 Internal-use software development 24,100 22,917 Automobile 582 616 Land 21,598 17,269 Total cost 147,370 139,336 Less—accumulated depreciation (74,165) (69,732) Total property, plant and equipment, net $ 73,205 $ 69,604 The Company capitalized $0.9 million and $2.1 million of software development costs for the three and nine months ended September 30, 2022, respectively, and $0.8 million and $3.2 million for the three and nine months ended September 30, 2021, respectively. Amortization expense related to capitalized software development costs were $0.6 million and $1.6 million for the three and nine months ended September 30, 2022, respectively, and $0.5 million and $1.4 million for the three and nine months ended September 30, 2021, respectively. As of September 30, 2022, unamortized implementation costs related to cloud computing arrangements are $0.3 million, of which $0.1 million are included in prepaid expenses and other current assets and $0.2 million are included in other long-term assets. The Company leases automobiles under leases accounted for as finance leases with expiration dates ranging from October 6, 2022 to June 23, 2026. As of September 30, 2022, cost and accumulated depreciation of the assets under finance leases recorded by the Company were $0.6 million and $0.3 million, respectively. The Company recognized depreciation expense, which includes amortization of capitalized software development costs, as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Cost of revenue $ 3,403 $ 3,138 $ 10,141 $ 9,345 Research and development 610 578 1,767 1,539 Sales and marketing 346 214 1,027 787 General and administrative 302 539 913 1,312 Total depreciation expense $ 4,661 $ 4,469 $ 13,848 $ 12,983

Intangible Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	7. Intangible Assets Intangible assets, net consisted of the following as of September 30, 2022: Gross Accumulated Net Carrying Amortization (In thousands) (In years) Customer relationships $ 134,579 $ (21,889) $ 112,690 15 - 20 Developed technology 70,743 (13,559) 57,184 10 Other, definite lived 2,828 (2,828) — 2 - 7 Licenses, indefinite lived 624 — 624 Indefinite Total intangible assets, net $ 208,774 $ (38,276) $ 170,498 Intangible assets, net consisted of the following as of December 31, 2021: Gross Accumulated Net Carrying Amortization (In thousands) (In years) Customer relationships $ 155,081 $ (16,861) $ 138,220 15 - 20 Developed technology 82,548 (10,315) 72,233 10 Other, definite lived 3,158 (3,158) — 2 - 7 Licenses, indefinite lived 764 — 764 Indefinite Total intangible assets, net $ 241,551 $ (30,334) $ 211,217 The Company recognized amortization expense as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Cost of revenue $ 1,831 $ 2,128 $ 5,797 $ 6,479 Sales and marketing 2,287 2,636 7,221 8,016 Total amortization expense $ 4,118 $ 4,764 $ 13,018 $ 14,495 The remaining weighted average amortization period for definite lived intangible assets is 11.3 years. Future estimated amortization expense for definite lived intangible assets is as follows: As of September 30, 2022 (In thousands) 2022 (remaining) $ 3,968 2023 15,873 2024 15,873 2025 15,873 2026 15,873 Thereafter 102,414 $ 169,874

Debt

Debt	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Debt	8. Debt Revolving Credit Facility On June 6, 2022, the Company entered into a credit agreement (the “Credit Agreement”) among the Company, as borrower, the lenders from time to time party thereto, and Silicon Valley Bank as administrative agent, issuing lender and swingline lender. The Credit Agreement provides for a $50.0 million revolving credit facility (the “Credit Facility”), including a $20.0 million sublimit for the issuance of letters of credit and a swingline subfacility of up to $5.0 million. The Credit Facility matures on June 6, 2025. Interest on borrowings under the Credit Facility accrues at an annual rate tied to a base rate or the Secured Overnight Financing Rate (“SOFR”), at the Company’s election. Loans based on SOFR bear interest at a rate equal to SOFR plus an applicable margin between 1.50% and 2.00% depending upon the Company’s consolidated adjusted quick ratio for the immediately preceding quarter, and loans based on the base rate bear interest at a rate equal to the base rate plus an applicable margin between 0.50% and 1.00% depending upon the Company’s consolidated adjusted quick ratio for the immediately preceding quarter. The Company is required to pay a quarterly commitment fee equal to 0.0625% on the unused portion of the borrowing commitment. The Credit Agreement requires that the Company meet a minimum quick ratio on a quarterly basis if the Company does not maintain the minimum liquidity amount of $70.0 million in cash and cash equivalents at all times. As of September 30, 2022, unamortized debt issuance costs were $0.5 million of which $0.2 million were included in prepaid expenses and other current assets and $0.3 million were included in other long-term assets. As of September 30, 2022, there were no borrowings under the Credit Facility and the Company was in compliance with all financial and non-financial covenants for all periods presented. The available borrowing capacity under the Credit Facility was $50.0 million as of September 30, 2022. Convertible Senior Notes and Capped Call Transactions 2026 Convertible Notes On February 28, 2020, the Company issued $400.0 million aggregate principal amount of 0.25% Convertible Notes due March 1, 2026 in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act (the “2026 Convertible Notes”). The interest on the 2026 Convertible Notes is payable semi-annually in arrears on March 1 and September 1 of each year, beginning on September 1, 2020. The 2026 Convertible Notes may bear special interest under specified circumstances relating to the Company’s failure to comply with its reporting obligations under the indenture governing the 2026 Convertible Notes (the “2026 Indenture”) or if the 2026 Convertible Notes are not freely tradeable as required by the 2026 Indenture. The 2026 Convertible Notes will mature on March 1, 2026, unless earlier repurchased, redeemed by the Company, or converted pursuant to their terms. The total net proceeds from the 2026 Convertible Notes, after deducting initial purchaser discounts, costs related to the 2026 Capped Calls (as defined herein), and debt issuance costs, paid by the Company, were approximately $344.7 million. Each $0.001 principal amount of the 2026 Convertible Notes is initially convertible into 10.9857 shares of the Company’s Class A common stock, par value $0.001 per share, which is equivalent to an initial conversion price of approximately $91.03 per share. The conversion rate is subject to adjustment upon the occurrence of certain specified events but will not be adjusted for any accrued and unpaid special interest. In addition, upon the occurrence of a make-whole fundamental change, as defined in the 2026 Indenture, the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its 2026 Convertible Notes in connection with such make-whole fundamental change or during the relevant redemption period. The 2026 Convertible Notes will be redeemable in whole or in part at the Company’s option on or after March 6, 2023, but before the fortieth (40 th ) scheduled trading day before the maturity date, at a cash redemption price equal to 100% of the principal amount of the 2026 Convertible Notes to be redeemed, plus accrued and unpaid interest, if any, if the last reported sale price of the Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading days ending on, and including, the trading day immediately before the date the redemption notices were sent; and the trading day immediately before such notices were sent. Prior to the close of business on the business day immediately preceding September 1, 2025, the 2026 Convertible Notes may be convertible at the option of the holders only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2020 (and only during such calendar quarter), if the last reported sale price per share of the Company’s Class A common stock exceeds 130% of the conversion price for each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter; (2) during the five consecutive business days immediately after any 10 consecutive trading day period (such 10 consecutive trading day period, the “measurement period”) in which the trading price per $0.001 principal amount of 2026 Convertible Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price per share of the Company’s Class A common stock on such trading day and the conversion rate on such trading day; (3) upon the occurrence of certain corporate events or distributions on its Class A common stock; and (4) if the Company calls such 2026 Convertible Notes for redemption. On or after September 1, 2025, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the 2026 Convertible Notes may, at their option, convert all or a portion of their 2026 Convertible Notes regardless of the foregoing conditions. Prior to and during the nine months ended September 30, 2021, the conditional conversion feature of the 2026 Convertible Notes was triggered as the last reported sale price of the Company’s Class A common stock was more than or equal to 130% of the conversion price for at least 20 trading days (whether or not consecutive) in the period of 30 consecutive trading days ending on or after June 30, 2020 (the last trading day of the calendar quarter), and therefore the 2026 Convertible Notes were convertible, in whole or in part, at the option of the holders between July 1, 2020 through September 30, 2021. The conditional conversion feature of the 2026 Convertible Notes was not triggered from October 1, 2021 through September 30, 2022 as the last reported sale price of the Company’s Class A common stock was not more than or equal to 130% of the conversion price for at least 20 trading days (whether or not consecutive) in the period of 30 consecutive trading days (the last trading day of the calendar quarter). Whether the 2026 Convertible Notes will be convertible following such period will depend on the satisfaction of this condition or another conversion condition in the future. The Company continues to classify the 2026 Convertible Notes as a long-term liability in its condensed consolidated balance sheet as of September 30, 2022, based on contractual settlement provisions. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of Class A common stock, or a combination of cash and shares of Class A common stock, at the Company’s election. It is the Company’s current intent to settle the principal amount of the 2026 Convertible Notes with cash. No sinking fund is provided for the 2026 Convertible Notes. Upon the occurrence of a fundamental change (as defined in the 2026 Indenture) prior to the maturity date, holders may require the Company to repurchase all or a portion of the 2026 Convertible Notes for cash at a price equal to the principal amount of the 2026 Convertible Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. In accounting for the issuance of the 2026 Convertible Notes, prior to the adoption of ASU 2020-06, the Company separated the 2026 Convertible Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar debt instrument that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was $125.2 million and was determined by deducting the fair value of the liability component from the par value of the 2026 Convertible Notes. The difference represented the debt discount that was amortized to interest expense at an effective interest rate of 6.763% over the term of the 2026 Convertible Notes. The carrying amount of the equity component was $57.5 million and is recorded in additional paid-in-capital. The equity component was not remeasured as long as it continued to meet the conditions for equity classification. The excess of the principal amount of the liability component over its carrying amount, or the debt discount, was amortized to interest expense at an annual effective interest rate of 6.907% over the contractual terms of the 2026 Convertible Notes. Upon adoption of ASU 2020-06 on January 1, 2022, the Company reversed the separation of the debt and equity component representing the conversion option and accounted for the 2026 Convertible Notes in their entirety as debt. The Company also reversed the amortization of the debt discount, with a cumulative adjustment to retained earnings on the adoption date. In accounting for the transaction costs related to the 2026 Convertible Notes, prior to the adoption of ASU 2020-06, the Company allocated the total amount incurred to the liability and equity components of the 2026 Convertible Notes based on the proportion of the proceeds allocated to the debt and equity components. Issuance costs attributable to the liability component were approximately $8.2 million, were recorded as an additional debt discount and amortized to interest expense using the effective interest method over the contractual terms of the 2026 Convertible Notes. Issuance costs attributable to the equity component of $3.7 million were netted with the equity component in stockholders’ equity. Upon adoption of ASU 2020-06 on January 1, 2022, the Company reversed the allocation of the issuance costs to the equity component and accounted for the entire amount as debt issuance cost that will be amortized as interest expense at an effective interest rate of 0.513% for the term of the 2026 Convertible Notes with a cumulative adjustment to retained earnings on the adoption date. 2028 Convertible Notes On March 16, 2021, the Company issued $250.0 million aggregate principal amount of 0.50% Convertible Notes due April 1, 2028 in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act (the “2028 Convertible Notes” and, together with the 2026 Convertible Notes, the “Convertible Notes”). The interest on the 2028 Convertible Notes is payable semi-annually in arrears on April 1 and October 1 of each year, beginning on October 1, 2021. The 2028 Convertible Notes may bear special interest under specified circumstances relating to the Company’s failure to comply with its reporting obligations under the indenture governing the 2028 Convertible Notes (the “2028 Indenture”) or if the 2028 Convertible Notes are not freely tradeable as required by the 2028 Indenture. The 2028 Convertible Notes will mature on April 1, 2028, unless earlier repurchased, redeemed by the Company, or converted pursuant to their terms. The total net proceeds from the 2028 Convertible Notes, after deducting initial purchaser discounts, costs related to the 2028 Capped Calls (as defined herein), and debt issuance costs, paid by the Company, were approximately $217.0 million. Each $0.001 principal amount of the 2028 Convertible Notes is initially convertible into 5.5781 shares of the Company’s Class A common stock, par value $0.001 per share, which is equivalent to an initial conversion price of approximately $179.27 per share. The conversion rate is subject to adjustment upon the occurrence of certain specified events but will not be adjusted for any accrued and unpaid special interest. In addition, upon the occurrence of a make-whole fundamental change, as defined in the 2028 Indenture, the Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its 2028 Convertible Notes in connection with such make-whole fundamental change or during the relevant redemption period. The 2028 Convertible Notes will be redeemable in whole or in part at the Company’s option on or after April 6, 2025, but before the fortieth (40 th ) scheduled trading day before the maturity date, at a cash redemption price equal to 100% of the principal amount of the 2028 Convertible Notes to be redeemed, plus accrued and unpaid interest, if any, if the last reported sale price of the Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading days ending on, and including, the trading day immediately before the date the redemption notices were sent; and the trading day immediately before such notices were sent. On or after April 6, 2025 until the close of business on the scheduled trading day immediately preceding the maturity date, the 2028 Convertible Notes may be convertible at the option of the holders only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price per share of the Company’s Class A common stock exceeds 130% of the conversion price for each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter; (2) during the five consecutive business days immediately after any 10 consecutive trading day period (such 10 consecutive trading day period, the “measurement period”) in which the trading price per $0.001 principal amount of 2028 Convertible Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price per share of the Company’s Class A common stock on such trading day and the conversion rate on such trading day; (3) upon the occurrence of certain corporate events or distributions on its Class A common stock; and (4) if the Company calls such 2028 Convertible Notes for redemption. On or after October 1, 2027, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the 2028 Convertible Notes may, at their option, convert all or a portion of their Convertible Notes regardless of the foregoing conditions. Prior to and during the three and nine months ended September 30, 2022 and 2021, the conditional conversion feature of the 2028 Convertible Notes was not triggered as the last reported sale price of the Company’s Class A common stock was not more than or equal to 130% of the conversion price for at least 20 trading days (whether or not consecutive) in the period of 30 consecutive trading days (the last trading day of the calendar quarter). Whether the 2028 Convertible Notes will be convertible following such period will depend on the satisfaction of this condition or another conversion condition in the future. The Company continues to classify the 2028 Convertible Notes as a long-term liability in its condensed consolidated balance sheet as of September 30, 2022, based on contractual settlement provisions. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of Class A common stock, or a combination of cash and shares of Class A common stock, at the Company’s election. It is the Company’s current intent to settle the principal amount of the 2028 Convertible Notes with cash. No sinking fund is provided for the 2028 Convertible Notes. Upon the occurrence of a fundamental change (as defined in the 2028 Indenture) prior to the maturity date, holders may require the Company to repurchase all or a portion of the 2028 Convertible Notes for cash at a price equal to the principal amount of the 2028 Convertible Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. In accounting for the issuance of the 2028 Convertible Notes, prior to the adoption of ASU 2020-06, the Company separated the 2028 Convertible Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar debt instrument that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was $66.9 million and was determined by deducting the fair value of the liability component from the par value of the 2028 Convertible Notes. The difference represents the debt discount that was amortized to interest expense at an effective interest rate of 5.125% over the term of the 2028 Convertible Notes. The carrying amount of the equity component was $39.4 million and was recorded in additional paid-in-capital. The equity component was not remeasured as long as it continued to meet the conditions for equity classification. The excess of the principal amount of the liability component over its carrying amount, or the debt discount, was amortized to interest expense at an annual effective interest rate of 4.959% over the contractual terms of the 2028 Convertible Notes. Upon adoption of ASU 2020-06 on January 1, 2022, the Company reversed the separation of the debt and equity component representing the conversion option and accounted for the 2028 Convertible Notes in their entirety as debt. The Company also reversed the amortization of the debt discount, with a cumulative adjustment to retained earnings on the adoption date In accounting for the transaction costs related to the 2028 Convertible Notes, prior to the adoption of ASU 2020-06, the Company allocated the total amount incurred to the liability and equity components of the 2028 Convertible Notes based on the proportion of the proceeds allocated to the debt and equity components. Issuance costs attributable to the liability component were approximately $5.5 million, were recorded as an additional debt discount and amortized to interest expense using the effective interest method over the contractual terms of the 2028 Convertible Notes. Issuance costs attributable to the equity component of $2.0 million were netted with the equity component in stockholders’ equity. Upon adoption of ASU 2020-06 on January 1, 2022, the Company reversed the allocation of the issuance costs to the equity component and accounted for the entire amount as debt issuance cost that will be amortized as interest expense at an effective interest rate of 0.442% for the term of the 2028 Convertible Notes with a cumulative adjustment to retained earnings on the adoption date. As discussed above, upon adoption of ASU 2020-06, the Company reversed the separation of the debt and equity components of the 2026 and 2028 Convertible Notes, and accounted for the Convertible Notes wholly as debt. Additionally, the issuance costs of the 2026 and 2028 Convertible Notes were accounted for as debt issuance costs in their entirety. There is no longer a net carrying amount for the equity component as of the adoption date, January 1, 2022. The net carrying amount of the liability components of the 2026 and 2028 Convertible Notes were as follows: As of September 30, As of December 31, 2022 2021 2026 Convertible Notes: (In thousands) Principal $ 400,000 $ 400,000 Unamortized discount N/A (92,034) Unamortized debt issuance costs (6,837) (6,043) 2026 Convertible Notes net carrying amount $ 393,163 $ 301,923 2028 Convertible Notes: Principal $ 250,000 $ 250,000 Unamortized discount N/A (60,488) Unamortized debt issuance costs (5,915) (4,995) 2028 Convertible Notes net carrying amount $ 244,085 $ 184,517 Total net carrying amount $ 637,248 $ 486,440 The net carrying amount of the equity components of the 2026 and 2028 Convertible Notes were as follows: As of September 30, As of December 31, 2022 2021 2026 Convertible Notes: (In thousands) Proceeds allocated to the conversion options (debt discount) N/A $ 125,152 Issuance costs N/A (3,742) 2026 Convertible Notes net carrying amount N/A $ 121,410 2028 Convertible Notes: Proceeds allocated to the conversion options (debt discount) N/A $ 66,908 Issuance costs N/A (2,019) 2028 Convertible Notes net carrying amount N/A $ 64,889 Total net carrying amount N/A $ 186,299 The following table sets forth the interest expense recognized related to the 2026 and 2028 Convertible Notes: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 2026 Convertible Notes: (In thousands) Contractual interest expense $ 250 $ 250 $ 750 $ 750 Amortization of debt discount (1) N/A 4,664 N/A 13,761 Amortization of debt issuance costs 497 306 1,488 903 Total interest expense related to the 2026 Convertible Notes $ 747 $ 5,220 $ 2,238 $ 15,414 2028 Convertible Notes: Contractual interest expense $ 313 $ 313 $ 939 $ 678 Amortization of debt discount (1) N/A 2,029 N/A 4,366 Amortization of debt issuance costs 266 168 796 362 Total interest expense related to the 2028 Convertible Notes $ 579 $ 2,510 $ 1,735 $ 5,406 Total interest expense $ 1,326 $ 7,730 $ 3,973 $ 20,820 ________________________ (1) Upon adoption of ASU 2020-06, the debt discount associated with the equity component on convertible debt outstanding was reversed, which resulted in a decrease in the amount of non-cash interest expense to be recognized going forward. In connection with the offering of the 2026 Convertible Notes and the 2028 Convertible Notes, the Company entered into privately negotiated capped call transactions with certain counterparties (the “2026 Capped Calls” and the “2028 Capped Calls,” respectively and, collectively, the “Capped Calls”). The 2026 Capped Calls and the 2028 Capped Calls each have an initial strike price of approximately $91.03 and $179.27 per share, respectively, subject to certain adjustments, which corresponds to the initial conversion price of the 2026 Convertible Notes and the 2028 Convertible Notes. The 2026 Capped Calls and the 2028 Capped Calls have initial cap prices of $137.40 and $260.76 per share subject to certain adjustments, respectively. The 2026 Capped Calls and the 2028 Capped Calls cover, subject to anti-dilution adjustments, approximately 4,394,276 and 1,394,525 shares of Class A common stock for the 2026 Convertible Notes and 2028 Convertible Notes, respectively. The Capped Calls are generally intended to reduce or offset the potential dilution to the Class A common stock upon any conversion of the 2026 Convertible Notes and 2028 Convertible Notes with such reduction or offset, as the case may be, subject to a cap based on the cap price. The Capped Calls expire on the earlier of (i) the last day on which any convertible securities remain outstanding and (ii) March 1, 2026 for the 2026 Capped Calls and April 1, 2028 for the 2028 Capped Calls, subject to earlier exercise. The Capped Calls are subject to either adjustment or termination upon the occurrence of specified extraordinary events affecting the Company, including a merger event, a tender offer, and a nationalization, insolvency or delisting involving the Company. In addition, the Capped Calls are subject to certain specified additional disruption events that may give rise to a termination of the Capped Calls, including changes in law, insolvency filings, and hedging disruptions. The Capped Call transactions are recorded in stockholders’ equity and are not accounted for as derivatives. The net cost of $43.3 million and $25.5 million incurred to purchase the 2026 Capped Calls and the 2028 Capped Calls, respectively, was recorded as a reduction to additional paid-in capital in the accompanying condensed consolidated balance sheets. The Convertible Notes are effectively subordinated to the Company’s future senior secured indebtedness, including the Credit Facility, to the extent of the value of the collateral securing that indebtedness. The Convertible notes are the senior, unsecured obligations of the Company and are equal in right of payment with the Company’s future senior unsecured indebtedness, if any, senior in right of payment to the Company’s existing and future

Geographic Information

Geographic Information	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Geographic Information	9. Geographic Information The Company’s long-lived assets were primarily held in the United States as of September 30, 2022 and December 31, 2021. As of September 30, 2022 and December 31, 2021, long-lived assets held outside of the United States were $8.9 million and $9.2 million, respectively. The Company generates its revenue primarily in the United States. Revenue by geographic area is detailed in the table below (which is determined based on the customer billing address): Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) United States $ 134,214 $ 115,059 $ 371,478 $ 322,762 International 14,111 15,579 44,700 42,013 Total $ 148,325 $ 130,638 $ 416,178 $ 364,775

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Stockholders' Equity	10. Stockholders’ Equity Common Stock As of September 30, 2022, 23,358,203 and 1,965,170 shares of Class A common stock and Class B common stock, respectively, were issued and outstanding. As of December 31, 2021, 23,177,988 and 1,965,170 shares of Class A common stock and Class B common stock, respectively, were issued and outstanding. Reserved Shares The Company had reserved shares of Class A common stock for issuance under stock-based award agreements as follows: As of September 30, As of December 31, 2022 2021 Stock options issued and outstanding 159,827 180,209 Nonvested restricted stock units issued and outstanding 1,018,312 344,486 Stock-based awards available for grant under the 2017 Plan 3,488,874 3,060,674 4,667,013 3,585,369

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	11. Stock-Based Compensation 2010 Stock Option Plan As of July 26, 2010, the Company adopted the 2010 Equity Compensation Plan (the “2010 Plan”). On November 9, 2017, the 2010 Plan was terminated in connection with the Company’s initial public offering. Accordingly, no shares are available for future issuance under the 2010 Plan. However, the 2010 Plan continues to govern the terms and conditions of the outstanding awards granted thereunder. Amended and Restated 2017 Incentive Award Plan The Company’s Amended and Restated 2017 Incentive Award Plan (as amended from time to time, the “2017 Plan”) became effective on November 9, 2017. The 2017 Plan provides for the grant of stock options, including incentive stock options and non-qualified stock options, stock appreciation rights, restricted stock, dividend equivalents, restricted stock units, and other stock or cash based awards to employees, consultants and directors of the Company. A total of 1,050,000 shares of the Company’s Class A common stock were originally reserved for issuance under the 2017 Plan. These available shares automatically increase each January 1, beginning on January 1, 2018, by 5% of the number of shares of the Company’s Class A common stock outstanding on the final day of the immediately preceding calendar year. On January 1, 2022, the shares available for grant under the 2017 Plan were automatically increased by 1,158,900 shares. The terms of the stock option grants are determined by the Company’s Board of Directors. The Company’s stock options vest based on terms of the stock option agreements. The stock options have a contractual life of ten years. Restricted stock units (“RSUs”) granted to employees and non-employee members of the Board of Directors under the 2017 Plan are generally subject to a time-based vesting condition. The compensation expense related to these awards is based on the grant date fair value of the RSUs and is recognized on a ratable basis over the applicable service period. Vesting schedules may differ as between different categories of award recipients. Stock Options The following summarizes the stock option activity for the periods presented: Number of Weighted- Weighted- Aggregate Outstanding as of December 31, 2021 180,209 $ 10.14 3.39 $ 11,104 Granted — — Exercised (20,382) 7.95 Forfeited or cancelled — — Outstanding as of September 30, 2022 159,827 $ 10.42 2.82 $ 477 Options vested and exercisable at September 30, 2022 159,827 $ 10.42 2.82 $ 477 Options vested and expected to vest as of September 30, 2022 159,827 $ 10.42 2.82 $ 477 Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Aggregate intrinsic value of stock options exercised $ — $ 880 $ 634 $ 9,059 Total estimated grant date fair value of options vested — 153 — 199 Aggregate intrinsic value is computed based on the difference between the option exercise price and the fair value of the Company’s common stock as of September 30, 2022, based on the Company’s Class A common stock price as reported on the NASDAQ Global Select Market. No options were granted for the three and nine months ended September 30, 2022 and 2021. As of September 30, 2022, the Company had no unrecognized compensation cost related to non-vested stock options. All outstanding stock options are fully vested. Restricted Stock Units The following summarizes the RSU activity for the period presented: Number of awards outstanding Weighted-average grant date fair value (Per share) Nonvested RSUs as of December 31, 2021 344,486 $ 82.38 Granted 965,786 47.87 Vested (203,723) 62.70 Forfeited or cancelled (88,237) 75.67 Nonvested RSUs as of September 30, 2022 1,018,312 $ 54.32 As of September 30, 2022, total unrecognized compensation cost related to non-vested RSUs was $46.3 million, which will be amortized over a weighted-average period of 3.01 years. Stock-Based Compensation Expense The Company recognized total stock-based compensation expense as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Cost of revenue $ 93 $ 80 $ 283 $ 275 Research and development 1,767 877 5,298 2,892 Sales and marketing 593 603 2,219 1,847 General and administrative 2,439 2,265 7,259 6,578 Total $ 4,892 $ 3,825 $ 15,059 $ 11,592

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies Operating Leases The Company leases office space under operating lease agreements that expire over the next 4.25 years. See Note 5, “Right-of-Use Asset and Lease Liabilities” to the condensed consolidated financial statements, for additional details on the Company’s operating lease commitments. Contractual Obligations As of September 30, 2022, the Company has $14.7 million in non-cancellable purchase obligations, consisting of primarily network equipment maintenance and software license contracts, of which $11.8 million will be fulfilled within one year. On May 27, 2021, the Company entered into the Lease with the Developer for the Conveyed Parcel, together with the Project. The respective obligations of the Company and the Developer under the Lease were conditioned upon the Developer acquiring fee simple title to the Conveyed Parcel, which occurred on June 4, 2021. The Lease term will commence upon the Commencement Date and continue for the Initial Term. It is anticipated that the Commencement Date will occur in June 2023. If the Commencement Date does not occur within one hundred twenty twelve The Company has the option to renew the Initial Term for two ten-year periods. Base rent payments will begin on the Commencement Date. The initial base rent will increase by 1.85% on each anniversary of the Commencement Date. Total lease payments over the Initial Term are approximately $495.7 million. See Note 5, “Right-of-Use Asset and Lease Liabilities” to the condensed consolidated financial statements, for additional details on the Company's operating lease commitments. Legal Matters The Company is involved as a defendant in various litigation, including, but not limited to, lawsuits alleging that the Company failed to bill, collect and remit certain taxes and surcharges associated with the provision of 911 services pursuant to applicable laws in various jurisdictions and an action brought under the Telephone Consumer Protection Act of 1991 relating to our alleged failure to block unsolicited phone calls to the plaintiff and putative class members. We intend to vigorously defend these lawsuits and believe that we have meritorious defenses to each. However, litigation is inherently uncertain, and any judgment or injunctive relief entered against us or any adverse settlement could adversely affect our business, results of operations and financial condition.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2022
Retirement Benefits [Abstract]
Employee Benefit Plans	13. Employee Benefit Plans The Company sponsors a U.S. defined contribution 401(k), which allows eligible U.S.-based employees to defer a portion of their compensation. The Company, at its discretion, may make matching contributions. With the acquisition of Voxbone S.A. on November 1, 2020, the Company assumed sponsorship for Voxbone S.A.’s U.S. defined contribution 401(k). In connection with that acquisition, the Company also assumed sponsorship for a non-U.S. defined contribution plan for which it pays fixed contributions into a separate entity. The Company has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current or prior periods. The contributions are recognized as employee benefit expense when they are due. The Company made matching contributions for the defined contribution plans of $1.0 million and $3.2 million for the three and nine months ended September 30, 2022, respectively, and $0.8 million and $2.6 million for the three and nine months ended September 30, 2021, respectively. In addition, as a result of the acquisition of Voxbone S.A., the Company assumed sponsorship for Voxbone S.A.’s non-U.S. defined benefit pension plans. The liability recognized is the present value of the defined benefit obligation at the end of the reporting period less the fair value of the plan assets and is included in other liabilities in the accompanying condensed consolidated balance sheets. The defined benefit obligation is calculated annually by an independent actuary using the Projected Unit Credit Method.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	14. Income Taxes At the end of each interim reporting period, the Company determines the income tax provision by using an estimate of the annual effective tax rate, adjusted for discrete items occurring in the quarter. The effective income tax rate reflects the effect of federal and state income taxes and the permanent impacts of differences in book and tax accounting. The Company’s effective tax rate was 53.5% and 7.7% for the three and nine months ended September 30, 2022, respectively, and (4.8)% and (1.3)% for the three and nine months ended September 30, 2021, respectively. The increases in the effective tax rates are primarily due to an increase in tax benefit resulting from additional operating losses outside of the U.S. which are not offset by a valuation allowance. Judgment is required in determining whether deferred tax assets will be realized in full or in part. Management assesses the available positive and negative evidence on a jurisdictional basis to estimate if deferred tax assets will be recognized and when it is more likely than not that all or some deferred tax assets will not be realized, and a valuation allowance must be established. As of September 30, 2022, the Company continues to maintain a valuation allowance for its U.S. federal and state net deferred tax assets. The Company’s effective tax rate for the three months ended September 30, 2022 differed from the federal statutory tax rate of 21.0% in the U.S. primarily due to a permanent research tax deduction in a foreign jurisdiction and foreign tax rate differentials. The Company’s effective tax rate for the nine months ended September 30, 2022 differed from the federal statutory tax rate of 21.0% in the U.S. primarily due to the valuation allowance recognized against federal and state deferred tax assets in the U.S. Other permanent tax adjustments within the effective tax rates, which are offset by the valuation allowance, include state taxes, federal research credit under Internal Revenue Code Section 41, equity compensation in the U.S. and other U.S. non-deductible expenditures.

Related Parties

Related Parties	9 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related Parties	15. Related Parties The Company has certain involvement with Relay via an ongoing Master Services Agreement and a Facilities Sharing Agreement that expired in July 2022. Amounts charged under these arrangements totaled $0.3 million and $1.1 million for the three and nine months ended September 30, 2022, respectively, and $0.4 million and $1.4 million for the three and nine months ended September 30, 2021, respectively. Amounts due under these arrangements totaled less than $0.1 million and $0.1 million as of September 30, 2022 and December 31, 2021, respectively.

Basic and Diluted Loss per Comm

Basic and Diluted Loss per Common Share	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Basic and Diluted Loss per Common Share	16. Basic and Diluted Loss per Common Share Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding during the period. The Company is in a net loss position for the three and nine months ended September 30, 2022 and 2021 and therefore diluted shares equals basic shares. The components of basic and diluted loss per share are as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands, except share and per share amounts) Earnings per share Net loss attributable to common stockholders $ (802) $ (6,944) $ (13,864) $ (19,188) Net loss per share, basic and diluted $ (0.03) $ (0.28) $ (0.55) $ (0.77) Weighted average number of common shares outstanding, basic and diluted 25,304,057 25,114,762 25,268,216 25,075,941 The following common share equivalents were excluded from the weighted average shares used to calculate net loss per common share because their effects would have been anti-dilutive: As of September 30, 2022 2021 Stock options issued and outstanding 159,827 183,271 Restricted stock units issued and outstanding 1,018,312 369,614 Convertible senior notes (1) (2) 5,788,805 1,316,199 Total 6,966,944 1,869,084 ________________________ (1) As of September 30, 2022, subsequent to adopting ASU 2020-06 as of January 1, 2022, the Company used the if-converted method to calculate the dilutive impact of the 2026 Convertible Notes and 2028 Convertible Notes on diluted income per share, if applicable. The Company expected to settle the principal amount of these notes in cash and any excess in shares of the Company’s Class A common stock. The diluted shares were calculated based on the initial conversion rate of 10.9857 and 5.5781 shares per $0.001 of the aggregate principal amount for the 2026 Convertible Notes and 2028 Convertible Notes, respectively. See Note 2, “Summary of Significant Accounting Policies” to the condensed consolidated financial statements, for additional details on the adoption of ASU 2020-06 and Note 8, “Debt” to the condensed consolidated financial statements, for additional details on the Company’s Convertible Notes. (2) As of September 30, 2021, the Company used the treasury stock method to calculate the dilutive impact of the 2026 Convertible Notes and the 2028 Convertible Notes because at that time the Company expected to settle the principal amount of these notes in cash and any excess in shares of the Company’s Class A common stock. As of September 30, 2021, the conversion spread, calculated using the average market price of Class A common stock during the period consistent with the treasury stock method, had a dilutive impact for the 2026 Convertible Notes on diluted net income per share of Class A common stock when the average market price of the Company’s Class A common stock for a given period exceeded the conversion price of $91.03 per share. As of September 30, 2021, the conversion spread for the 2028 Convertible Notes was anti-dilutive as the average market price of the Company’s Class A common stock for a given period did not exceed the conversion price of $179.27 per share.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Event	17. Subsequent Event Repurchase of 2026 Convertible Notes On November 1, 2022, the Company announced that it has entered into separate, privately negotiated transactions with a limited number of holders of its outstanding 2026 Convertible Notes to repurchase (collectively, the “Repurchases”) approximately $160.0 million aggregate principal amount of the 2026 Convertible Notes at approximately a 29 percent discount to par value. The repurchase price payable by the Company will be paid in cash and will be based in part on the daily volume-weighted average price per share of the Company’s Class A common stock over a 15 consecutive trading day measurement period beginning on, and including, November 2, 2022. The Company previously entered into the 2026 Capped Calls with certain financial institutions in connection with the 2026 Convertible Notes. All of these transactions are expected to remain in effect notwithstanding the Repurchases. The Repurchases are expected to close on November 28, 2022, subject to the satisfaction of customary closing conditions. Following such closings, approximately $240.0 million principal amount of the 2026 Convertible Notes will remain outstanding.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Certain information and disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K filed with the SEC on February 25, 2022. The condensed consolidated balance sheet as of December 31, 2021, included herein, was derived from the audited financial statements as of that date, but does not include all disclosures, including certain notes required by GAAP on an annual reporting basis. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, comprehensive loss and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year 2022 or any future period.
Cost Alignment	Cost Alignment During the quarter ended March 31, 2022, the Company changed its presentation of certain costs to align with benchmarked definitions of cost of revenue, research and development, sales and marketing, and general and administrative expenses. As part of the benchmarked definitions, the Company has included allocations of facilities and shared IT costs based on employee headcount within the cost of revenue, research and development, sales and marketing, and general and administrative expense categories. Additionally, the product management function is now included in research and development rather than general and administrative as previously reported and the customer billing and collections function and the amortization of acquired customer relationship intangible assets are now included in sales and marketing rather than general and administrative as previously reported. Management believes use of the benchmarked definitions will increase comparability to peers and therefore usability of its financial statements. All periods presented have been conformed to the current definitions of cost of revenue, research and development, sales and marketing, and general and administrative expenses. There was no impact to revenue or net income for any periods presented. The condensed consolidated balance sheets, condensed consolidated statements of changes in stockholders’ equity and condensed consolidated statements of cash flows are not affected by these changes. The following is a comparison of the change in costs to the prior period: Three months ended September 30, 2021 Nine months ended September 30, 2021 As reported As previously reported As reported As previously reported (In thousands) Statement of Operations Cost of revenue $ 73,573 $ 72,395 $ 203,071 $ 199,782 Research and development 16,857 13,359 50,036 39,509 Sales and marketing 21,143 13,592 60,458 38,168 General and administrative 18,127 30,354 49,375 85,481
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of Bandwidth Inc. and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the Company’s condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and judgments that affect the amounts reported in these financial statements and accompanying notes. These estimates in the condensed consolidated financial statements include, but are not limited to, allowance for doubtful accounts, reserve for expected credit losses, reserve for sales credits, recoverability of long lived and intangible assets, fair value of acquired intangible assets and goodwill, discount rates used in the valuation of right-of-use assets and lease liabilities, the fair value of the liability of the Company’s Convertible Notes (as defined herein), estimated period of benefit, valuation allowances on deferred tax assets, certain accrued expenses and contingencies, economic and demographic actuarial assumptions related to pension and other postretirement benefit costs and liabilities, estimated cash flows on asset retirement obligation. Although the Company believes that the estimates it uses are reasonable, due to the inherent uncertainty involved in making these estimates, actual results reported in future periods could differ from those estimates.
Cash and Cash Equivalents and Restricted Cash	Cash and Cash Equivalents The Company classifies all highly liquid investments with original stated maturities of three months or less from the date of purchase as cash equivalents. All highly liquid investments with original stated maturities of greater than three months from the date of purchase are classified as current marketable securities. Cash deposits are primarily in financial institutions in the United States. However, cash for monthly operating costs of international operations are deposited in banks outside the United States. The Company has a policy of making investments only with commercial institutions that have at least an investment grade credit rating. The Company utilizes money market funds as an investment option and only invests in AAA rated funds. Restricted Cash Restricted cash consists primarily of employee withholding tax liability and employee benefits contributions not yet remitted. The Company has classified this asset as a short-term asset in order to match the expected period of restriction.
Marketable Securities	Marketable Securities The Company’s marketable securities consist of time deposits, U.S. treasury debt securities, commercial paper, and corporate debt securities. The Company classifies marketable securities as available-for-sale at the time of purchase and reevaluates such classification as of each balance sheet date. The Company may sell these securities at any time for use in current operations even if they have not yet reached maturity. As a result, the Company classifies investments with maturities greater than 90 days as marketable securities in the accompanying condensed consolidated balance sheets. Available-for-sale securities are recorded at fair value at the end of each reporting period. Unrealized gains and losses are excluded from earnings and recorded as a separate component within accumulated other comprehensive loss on the condensed consolidated balance sheets until realized. Interest income is reported within other (expense) income, net on the condensed consolidated statements of operations. The Company evaluates its investments to assess whether the amortized cost basis is in excess of estimated fair value and determines what amount of that difference, if any, is caused by expected credit losses. Allowance for credit losses are recognized as a charge in other (expense) income, net on the condensed consolidated statements of operations, and any remaining unrealized losses are included in accumulated other comprehensive loss on the condensed consolidated balance sheets. Due to the nature and investment grade of the Company’s marketable securities, there were no credit losses recorded for the three and nine months ended September 30, 2022. There have been no impairment charges for any unrealized losses during the period. The Company determines realized gains and losses on the sale of marketable securities using the specific identification method and records such gains and losses in other (expense) income, net on the condensed consolidated statements of operations.
Accounts Receivable	Accounts Receivable and Current Expected Credit Losses Accounts receivable are stated at realizable value, net of allowances, which includes an allowance for doubtful accounts and a reserve for expected credit losses. The allowance for doubtful accounts is based on management’s assessment of the collectability of its customer accounts. The Company regularly reviews the composition of the accounts receivable aging, historical bad debts, changes in payment patterns, customer creditworthiness, current economic trends, and reasonable and supportable forecasts about the future. Relevant risk characteristics include customer size and historical loss patterns. Management has evaluated the expected credit losses related to trade accounts receivable and determined that an allowance of approximately $0.8 million and $1.7 million for uncollectible accounts and customer balances that are disputed was required as of September 30, 2022 and December 31, 2021, respectively. Refer to Note 4, “Financial Statement Components” to these condensed consolidated financial statements, for a rollforward of the components of the allowances as of September 30, 2022 and December 31, 2021.
Current Expected Credit Losses	Accounts Receivable and Current Expected Credit Losses Accounts receivable are stated at realizable value, net of allowances, which includes an allowance for doubtful accounts and a reserve for expected credit losses. The allowance for doubtful accounts is based on management’s assessment of the collectability of its customer accounts. The Company regularly reviews the composition of the accounts receivable aging, historical bad debts, changes in payment patterns, customer creditworthiness, current economic trends, and reasonable and supportable forecasts about the future. Relevant risk characteristics include customer size and historical loss patterns. Management has evaluated the expected credit losses related to trade accounts receivable and determined that an allowance of approximately $0.8 million and $1.7 million for uncollectible accounts and customer balances that are disputed was required as of September 30, 2022 and December 31, 2021, respectively. Refer to Note 4, “Financial Statement Components” to these condensed consolidated financial statements, for a rollforward of the components of the allowances as of September 30, 2022 and December 31, 2021.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that are exposed to concentration of credit risk consist primarily of cash and cash equivalents, marketable securities and trade accounts receivable. Cash deposits may be in excess of insured limits. The Company believes that the financial institutions that hold its cash deposits are financially sound and, accordingly, minimal credit risk exists with respect to these balances.
Debt Issuance Costs	Debt Issuance CostsThe Company incurs debt issuance costs associated with obtaining and entering into credit agreements and issuing convertible notes. These costs customarily include non-refundable structuring fees, commitment fees, up-front fees and syndication expenses. The Company has a policy of deferring and amortizing these costs based on the effective interest method over the term of the credit agreements or the convertible notes, as applicable.
Goodwill	Goodwill In accordance with Accounting Standards Codification (“ASC”) 350, “Intangibles - Goodwill and Other” (“ASC 350”), goodwill is not amortized, but rather is reviewed for impairment at the reporting unit level on the last day of the Company’s fourth quarter of each fiscal year, or when there is evidence that events or changes in circumstances indicate that the fair value of the reporting unit is less than the carrying amount of the reporting unit, including goodwill. The Company establishes its reporting units based on its current organizational structure and management’s view of the business. The Company has determined it has one reporting unit. Under ASC 350, the Company has the option to first assess qualitatively whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. In performing qualitative assessments, consistent with ASC 350-20-35-3C, the Company considers, among other factors, macroeconomic conditions (both in the United States and internationally), the Company’s overall financial performance (including, but not limited to, comparisons to prior periods, current period internal expectations, and comparable peer companies), broader industry and market considerations, and the trading price performance of the Company’s Class A common stock.
Recently Adopted Accounting Standards and Recent Accounting Pronouncements Not Yet Adopted	Recently Adopted Accounting Standards In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) , which is intended to address issues identified as a result of the complexity associated with applying GAAP for certain financial instruments with characteristics of liabilities and equity. For convertible instruments, ASU 2020-06 reduces the number of accounting models for convertible debt instruments and convertible preferred stock, and enhances information transparency by making targeted improvements to the disclosures for convertible instruments and EPS guidance on the basis of feedback from financial statement users. ASU 2020-06 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2021. Early adoption was permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The Company adopted the new guidance on January 1, 2022 using the modified retrospective approach resulting in decreases in accumulated deficit of $8.8 million, additional paid in capital of $156.2 million, and deferred tax liability of $1.0 million. The Company also recorded an increase in the convertible notes balance of $148.4 million as a result of the reversal of the separation of the convertible debt between debt and equity. The adoption of this standard decreased the amount of non-cash interest expense to be recognized in current and future periods as a result of eliminating the discount associated with the equity component. For the three and nine months ended September 30, 2022, the combined interest expense of the Convertible Notes was $6.9 million and $20.3 million lower, respectively, upon the adoption of ASU 2020-06. The number of diluted shares increased as a result of transitioning from the treasury stock method to the as-if converted method, but did not change the earnings per share for the three and nine months ended September 30, 2022 and 2021 as the Company incurred a net loss in both reporting periods. In May 2021, the FASB issued ASU 2021-04, Earnings Per Share (Topic 260), Debt —Modifications and Extinguishments (Subtopic 470-50), Compensation--Stock Compensation (Topic 718), and Derivatives and Hedging--Contracts in Entity’s Own Equity (Subtopic 815-40) , which is intended to provide clarity surrounding the treatment for a modification or an exchange of a freestanding equity-classified written call option. The amendments also provide guidance for the recognition and measurement of earnings-per-share (“EPS”) for certain modifications or exchanges of freestanding equity-classified written call options for entities that present EPS. The amendments do not affect a holder’s accounting for freestanding call options. ASU 2021-04 is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. Early adoption was permitted, including adoption in an interim period. The Company adopted the new guidance on January 1, 2022. The Company did not have any modifications or exchanges of freestanding written call options classified in equity during the reporting period and therefore did not have an impact on its financial statements. Recent Accounting Pronouncements Not Yet Adopted The Company did not have any applicable recent accounting pronouncements not yet adopted.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Schedule of Changes in Costs to Prior Periods	The following is a comparison of the change in costs to the prior period: Three months ended September 30, 2021 Nine months ended September 30, 2021 As reported As previously reported As reported As previously reported (In thousands) Statement of Operations Cost of revenue $ 73,573 $ 72,395 $ 203,071 $ 199,782 Research and development 16,857 13,359 50,036 39,509 Sales and marketing 21,143 13,592 60,458 38,168 General and administrative 18,127 30,354 49,375 85,481

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of Assets Measured at Fair Value on a Recurring Basis	The following tables summarize the assets measured at fair value as of September 30, 2022 and December 31, 2021: Amortized cost or carrying value Unrealized gains Unrealized losses Fair value measurements on a recurring basis Level 1 Level 2 Level 3 Total (In thousands) Financial assets: Cash and cash equivalents: Money market account $ 45,505 $ — $ — $ 45,505 $ — $ — $ 45,505 Commercial paper 30,819 — — 30,819 — — 30,819 Total included in cash and cash equivalents $ 76,324 $ — $ — $ 76,324 $ — $ — $ 76,324 Marketable securities: Time deposits $ 10,683 $ — $ (17) $ 10,666 $ — $ — $ 10,666 U.S. treasury securities 20,368 — (21) 20,347 — — 20,347 Corporate debt securities 43,221 — (235) — 42,986 — 42,986 Commercial paper 70,779 393 — 71,172 — — 71,172 Total marketable securities $ 145,051 $ 393 $ (273) $ 102,185 $ 42,986 $ — $ 145,171 Total financial assets $ 221,375 $ 393 $ (273) $ 178,509 $ 42,986 $ — $ 221,495 Fair value measurements on a recurring basis Level 1 Level 2 Level 3 Total (In thousands) Financial assets: Cash and cash equivalents: Money market account $ 241,157 $ — $ — $ 241,157 Total financial assets $ 241,157 $ — $ — $ 241,157
Schedule of Contractual Maturities of Marketable Securities	The following table summarizes the contractual maturities of marketable securities as of September 30, 2022: Amortized cost Aggregate fair value (In thousands) Financial assets: Less than one year $ 145,051 $ 145,171 Total $ 145,051 $ 145,171

Financial Statement Components

Financial Statement Components (Tables)	9 Months Ended
	Sep. 30, 2022
Financial Statement Components [Abstract]
Schedule of Accounts Receivable, net of Allowances	Accounts receivable, net of allowances consist of the following: As of September 30, As of December 31, 2022 2021 (In thousands) Trade accounts receivable $ 36,963 $ 31,036 Unbilled accounts receivable 40,396 31,786 Allowance for doubtful accounts and reserve for expected credit losses (792) (1,661) Other accounts receivable 30 411 Total accounts receivable, net $ 76,597 $ 61,572 Components of allowance for doubtful accounts and reserve for expected credit losses are as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Allowance for doubtful accounts: Balance, beginning of period $ (945) $ (1,364) $ (1,661) $ (1,203) Charged to bad debt expense, net of reversals (117) (169) 64 (475) Deductions (1) 236 54 728 182 Impact of foreign currency translation 34 12 77 29 Balance, end of period $ (792) $ (1,467) $ (792) $ (1,467) ________________________ (1) Write-off of uncollectible accounts after all collection efforts have been exhausted.
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following: As of September 30, As of December 31, 2022 2021 (In thousands) Accrued expense $ 32,609 $ 31,264 Accrued compensation and benefits 17,549 19,042 Accrued sales, use, VAT and telecommunications related taxes 17,327 11,046 Current portion of finance lease 121 177 Income tax payable 6,691 3,420 Other accrued expenses 756 972 Total accrued expenses and other current liabilities $ 75,053 $ 65,921

Right-of-Use Asset and Lease _2

Right-of-Use Asset and Lease Liabilities (Tables)	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Components of Lease Expense and Supplemental Cash Flow and Other Information	The components of lease expense recorded in the consolidated statement of operations were as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Operating lease cost $ 1,809 $ 1,699 $ 6,037 $ 5,002 Finance lease cost: Depreciation of assets 44 60 138 165 Interest on lease liabilities 3 5 10 14 Sublease income (14) (96) (206) (288) Total net lease cost $ 1,842 $ 1,668 $ 5,979 $ 4,893 Supplemental cash flow and other information related to leases was as follows: Nine months ended September 30, 2022 2021 (In thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 5,623 $ 4,535 Financing cash flows from finance leases 162 161 $ 5,785 $ 4,696 Weighted average remaining lease term (in years) Operating leases 2.28 3.14 Finance leases 2.48 2.56 Weighted average discount rate Operating leases 4.61 % 4.77 % Finance leases 4.50 % 4.00 %
Schedule of Supplemental Balance Sheet Lease Information	Supplemental balance sheet information related to leases was as follows: As of September 30, As of December 31, Leases Classification 2022 2021 (In thousands) Assets: Operating lease assets Operating right-of-use asset, net (1) $ 11,251 $ 14,061 Finance lease assets Property, plant and equipment, net (2) 286 373 Total leased assets $ 11,537 $ 14,434 Liabilities: Current Operating Operating lease liability, current $ 7,166 $ 5,807 Finance Accrued expenses and other current liabilities 121 177 Non-current Operating Operating lease liability, net of current portion 6,426 10,958 Finance Other liabilities 156 202 Total lease liabilities $ 13,869 $ 17,144 ________________________ (1) Operating lease assets are recorded net of accumulated amortization of $17.5 million and $14.8 million as of September 30, 2022 and December 31, 2021, respectively. (2) Finance lease assets are recorded net of accumulated depreciation of $0.3 million and $0.2 million as of September 30, 2022 and December 31, 2021, respectively.
Schedule of Maturities of Operating Lease Liabilities	Maturities of lease liabilities were as follows: As of September 30, 2022 Operating Leases Finance Leases (In thousands) 2022 (remaining) $ 1,580 $ 30 2023 8,030 130 2024 2,560 86 2025 1,532 37 2026 599 11 Total lease payments 14,301 294 Less: imputed interest (709) (17) Total lease obligations 13,592 277 Less: current obligations (7,166) (121) Long-term lease obligations $ 6,426 $ 156
Schedule of Maturities of Finance Lease Liabilities	Maturities of lease liabilities were as follows: As of September 30, 2022 Operating Leases Finance Leases (In thousands) 2022 (remaining) $ 1,580 $ 30 2023 8,030 130 2024 2,560 86 2025 1,532 37 2026 599 11 Total lease payments 14,301 294 Less: imputed interest (709) (17) Total lease obligations 13,592 277 Less: current obligations (7,166) (121) Long-term lease obligations $ 6,426 $ 156

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	9 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment, Net	Property, plant and equipment, net consisted of the following: As of September 30, As of December 31, 2022 2021 (In thousands) Furniture and fixtures $ 2,197 $ 2,240 Computer and office equipment 7,638 5,419 Telecommunications equipment 77,855 76,963 Leasehold improvements 6,212 6,970 Software 7,188 6,942 Internal-use software development 24,100 22,917 Automobile 582 616 Land 21,598 17,269 Total cost 147,370 139,336 Less—accumulated depreciation (74,165) (69,732) Total property, plant and equipment, net $ 73,205 $ 69,604
Schedule of Depreciation Expense	The Company recognized depreciation expense, which includes amortization of capitalized software development costs, as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Cost of revenue $ 3,403 $ 3,138 $ 10,141 $ 9,345 Research and development 610 578 1,767 1,539 Sales and marketing 346 214 1,027 787 General and administrative 302 539 913 1,312 Total depreciation expense $ 4,661 $ 4,469 $ 13,848 $ 12,983

Intangible Assets (Tables)

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite Lived Intangible Assets	Intangible assets, net consisted of the following as of September 30, 2022: Gross Accumulated Net Carrying Amortization (In thousands) (In years) Customer relationships $ 134,579 $ (21,889) $ 112,690 15 - 20 Developed technology 70,743 (13,559) 57,184 10 Other, definite lived 2,828 (2,828) — 2 - 7 Licenses, indefinite lived 624 — 624 Indefinite Total intangible assets, net $ 208,774 $ (38,276) $ 170,498 Intangible assets, net consisted of the following as of December 31, 2021: Gross Accumulated Net Carrying Amortization (In thousands) (In years) Customer relationships $ 155,081 $ (16,861) $ 138,220 15 - 20 Developed technology 82,548 (10,315) 72,233 10 Other, definite lived 3,158 (3,158) — 2 - 7 Licenses, indefinite lived 764 — 764 Indefinite Total intangible assets, net $ 241,551 $ (30,334) $ 211,217
Schedule of Infinite Lived Intangible Assets	Intangible assets, net consisted of the following as of September 30, 2022: Gross Accumulated Net Carrying Amortization (In thousands) (In years) Customer relationships $ 134,579 $ (21,889) $ 112,690 15 - 20 Developed technology 70,743 (13,559) 57,184 10 Other, definite lived 2,828 (2,828) — 2 - 7 Licenses, indefinite lived 624 — 624 Indefinite Total intangible assets, net $ 208,774 $ (38,276) $ 170,498 Intangible assets, net consisted of the following as of December 31, 2021: Gross Accumulated Net Carrying Amortization (In thousands) (In years) Customer relationships $ 155,081 $ (16,861) $ 138,220 15 - 20 Developed technology 82,548 (10,315) 72,233 10 Other, definite lived 3,158 (3,158) — 2 - 7 Licenses, indefinite lived 764 — 764 Indefinite Total intangible assets, net $ 241,551 $ (30,334) $ 211,217
Schedule of Amortization Expense	The Company recognized amortization expense as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Cost of revenue $ 1,831 $ 2,128 $ 5,797 $ 6,479 Sales and marketing 2,287 2,636 7,221 8,016 Total amortization expense $ 4,118 $ 4,764 $ 13,018 $ 14,495
Schedule of Future Estimated Amortization Expense	Future estimated amortization expense for definite lived intangible assets is as follows: As of September 30, 2022 (In thousands) 2022 (remaining) $ 3,968 2023 15,873 2024 15,873 2025 15,873 2026 15,873 Thereafter 102,414 $ 169,874

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Net Carrying Amount of Liability and Equity Component of Notes	The net carrying amount of the liability components of the 2026 and 2028 Convertible Notes were as follows: As of September 30, As of December 31, 2022 2021 2026 Convertible Notes: (In thousands) Principal $ 400,000 $ 400,000 Unamortized discount N/A (92,034) Unamortized debt issuance costs (6,837) (6,043) 2026 Convertible Notes net carrying amount $ 393,163 $ 301,923 2028 Convertible Notes: Principal $ 250,000 $ 250,000 Unamortized discount N/A (60,488) Unamortized debt issuance costs (5,915) (4,995) 2028 Convertible Notes net carrying amount $ 244,085 $ 184,517 Total net carrying amount $ 637,248 $ 486,440 The net carrying amount of the equity components of the 2026 and 2028 Convertible Notes were as follows: As of September 30, As of December 31, 2022 2021 2026 Convertible Notes: (In thousands) Proceeds allocated to the conversion options (debt discount) N/A $ 125,152 Issuance costs N/A (3,742) 2026 Convertible Notes net carrying amount N/A $ 121,410 2028 Convertible Notes: Proceeds allocated to the conversion options (debt discount) N/A $ 66,908 Issuance costs N/A (2,019) 2028 Convertible Notes net carrying amount N/A $ 64,889 Total net carrying amount N/A $ 186,299
Schedule of Interest Income and Interest Expense Disclosure	The following table sets forth the interest expense recognized related to the 2026 and 2028 Convertible Notes: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 2026 Convertible Notes: (In thousands) Contractual interest expense $ 250 $ 250 $ 750 $ 750 Amortization of debt discount (1) N/A 4,664 N/A 13,761 Amortization of debt issuance costs 497 306 1,488 903 Total interest expense related to the 2026 Convertible Notes $ 747 $ 5,220 $ 2,238 $ 15,414 2028 Convertible Notes: Contractual interest expense $ 313 $ 313 $ 939 $ 678 Amortization of debt discount (1) N/A 2,029 N/A 4,366 Amortization of debt issuance costs 266 168 796 362 Total interest expense related to the 2028 Convertible Notes $ 579 $ 2,510 $ 1,735 $ 5,406 Total interest expense $ 1,326 $ 7,730 $ 3,973 $ 20,820 ________________________ (1) Upon adoption of ASU 2020-06, the debt discount associated with the equity component on convertible debt outstanding was reversed, which resulted in a decrease in the amount of non-cash interest expense to be recognized going forward.

Geographic Information (Tables)

Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Schedule of Revenue by Geographical Area	The Company generates its revenue primarily in the United States. Revenue by geographic area is detailed in the table below (which is determined based on the customer billing address): Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) United States $ 134,214 $ 115,059 $ 371,478 $ 322,762 International 14,111 15,579 44,700 42,013 Total $ 148,325 $ 130,638 $ 416,178 $ 364,775

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Schedule of Reserved Shares of Common Stock for Issuance	The Company had reserved shares of Class A common stock for issuance under stock-based award agreements as follows: As of September 30, As of December 31, 2022 2021 Stock options issued and outstanding 159,827 180,209 Nonvested restricted stock units issued and outstanding 1,018,312 344,486 Stock-based awards available for grant under the 2017 Plan 3,488,874 3,060,674 4,667,013 3,585,369

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Stock Option Activity	The following summarizes the stock option activity for the periods presented: Number of Weighted- Weighted- Aggregate Outstanding as of December 31, 2021 180,209 $ 10.14 3.39 $ 11,104 Granted — — Exercised (20,382) 7.95 Forfeited or cancelled — — Outstanding as of September 30, 2022 159,827 $ 10.42 2.82 $ 477 Options vested and exercisable at September 30, 2022 159,827 $ 10.42 2.82 $ 477 Options vested and expected to vest as of September 30, 2022 159,827 $ 10.42 2.82 $ 477 Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Aggregate intrinsic value of stock options exercised $ — $ 880 $ 634 $ 9,059 Total estimated grant date fair value of options vested — 153 — 199
Schedule of Restricted Stock Unit Activity	The following summarizes the RSU activity for the period presented: Number of awards outstanding Weighted-average grant date fair value (Per share) Nonvested RSUs as of December 31, 2021 344,486 $ 82.38 Granted 965,786 47.87 Vested (203,723) 62.70 Forfeited or cancelled (88,237) 75.67 Nonvested RSUs as of September 30, 2022 1,018,312 $ 54.32
Schedule of Stock-Based Compensation Expense	The Company recognized total stock-based compensation expense as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands) Cost of revenue $ 93 $ 80 $ 283 $ 275 Research and development 1,767 877 5,298 2,892 Sales and marketing 593 603 2,219 1,847 General and administrative 2,439 2,265 7,259 6,578 Total $ 4,892 $ 3,825 $ 15,059 $ 11,592

Basic and Diluted Loss per Co_2

Basic and Diluted Loss per Common Share (Tables)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The components of basic and diluted loss per share are as follows: Three months ended September 30, Nine months ended September 30, 2022 2021 2022 2021 (In thousands, except share and per share amounts) Earnings per share Net loss attributable to common stockholders $ (802) $ (6,944) $ (13,864) $ (19,188) Net loss per share, basic and diluted $ (0.03) $ (0.28) $ (0.55) $ (0.77) Weighted average number of common shares outstanding, basic and diluted 25,304,057 25,114,762 25,268,216 25,075,941
Schedule of Anti-dilutive Common Shares Excluded from Calculation of Net Loss	The following common share equivalents were excluded from the weighted average shares used to calculate net loss per common share because their effects would have been anti-dilutive: As of September 30, 2022 2021 Stock options issued and outstanding 159,827 183,271 Restricted stock units issued and outstanding 1,018,312 369,614 Convertible senior notes (1) (2) 5,788,805 1,316,199 Total 6,966,944 1,869,084 ________________________ (1) As of September 30, 2022, subsequent to adopting ASU 2020-06 as of January 1, 2022, the Company used the if-converted method to calculate the dilutive impact of the 2026 Convertible Notes and 2028 Convertible Notes on diluted income per share, if applicable. The Company expected to settle the principal amount of these notes in cash and any excess in shares of the Company’s Class A common stock. The diluted shares were calculated based on the initial conversion rate of 10.9857 and 5.5781 shares per $0.001 of the aggregate principal amount for the 2026 Convertible Notes and 2028 Convertible Notes, respectively. See Note 2, “Summary of Significant Accounting Policies” to the condensed consolidated financial statements, for additional details on the adoption of ASU 2020-06 and Note 8, “Debt” to the condensed consolidated financial statements, for additional details on the Company’s Convertible Notes. (2) As of September 30, 2021, the Company used the treasury stock method to calculate the dilutive impact of the 2026 Convertible Notes and the 2028 Convertible Notes because at that time the Company expected to settle the principal amount of these notes in cash and any excess in shares of the Company’s Class A common stock. As of September 30, 2021, the conversion spread, calculated using the average market price of Class A common stock during the period consistent with the treasury stock method, had a dilutive impact for the 2026 Convertible Notes on diluted net income per share of Class A common stock when the average market price of the Company’s Class A common stock for a given period exceeded the conversion price of $91.03 per share. As of September 30, 2021, the conversion spread for the 2028 Convertible Notes was anti-dilutive as the average market price of the Company’s Class A common stock for a given period did not exceed the conversion price of $179.27 per share.

Organization and Description _2

Organization and Description of Business (Details)	3 Months Ended
	Mar. 31, 2022 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	1

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Schedule of Changes in Costs to Prior Periods (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification [Line Items]
Cost of revenue	$ 84,861	$ 73,573	$ 241,896	$ 203,071
Research and development	25,044	16,857	71,735	50,036
Sales and marketing	23,184	21,143	69,663	60,458
General and administrative	$ 16,623	18,127	$ 50,191	49,375
Previously Reported
Reclassification [Line Items]
Cost of revenue		72,395		199,782
Research and development		13,359		39,509
Sales and marketing		13,592		38,168
General and administrative		$ 30,354		$ 85,481

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Accounts Receivable and Current Expected Credit Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 792	$ 1,661
Unbilled accounts receivable	$ 40,396	$ 31,786

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details)	12 Months Ended
	Dec. 31, 2021
One customer | Individual customer | Accounts receivable, net of allowance for doubtful accounts
Concentration Risk [Line Items]
Concentration risk (as a percent)	10%

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Goodwill (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) reporting_unit	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Accounting Policies [Abstract]
Reporting units | reporting_unit			1
Goodwill	$ 298,892,000		$ 298,892,000		$ 344,423,000
Goodwill impairment charges	$ 0	$ 0	$ 0	$ 0

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jan. 01, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit	$ (81,981)		$ (81,981)			$ (76,867)
Additional paid-in capital	(359,465)		(359,465)			(502,477)
Convertible senior notes	637,248		637,248			$ 486,440
Interest expense, debt	1,326	$ 7,730	3,973	$ 20,820
Accounting Standards Update 2020-06 | Cumulative effect of adoption, adjusted balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit					$ 8,800
Additional paid-in capital					156,200
Deferred tax liability					1,000
Convertible senior notes					$ 148,400
Interest expense, debt	$ 6,900		$ 20,300

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 166,384	$ 331,453
Amortized cost	145,051
Unrealized gains	393
Unrealized losses	(273)
Total marketable securities	145,171
Total financial assets	221,375
Money market account
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	45,505
Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized cost	10,683
Unrealized gains	0
Unrealized losses	(17)
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized cost	20,368
Unrealized gains	0
Unrealized losses	(21)
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized cost	43,221
Unrealized gains	0
Unrealized losses	(235)
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	30,819
Amortized cost	70,779
Unrealized gains	393
Unrealized losses	0
Total included in cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	76,324
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	145,171
Total financial assets	221,495	241,157
Recurring | Money market account
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	45,505	241,157
Recurring | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	10,666
Recurring | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	20,347
Recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	42,986
Recurring | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	30,819
Total marketable securities	71,172
Recurring | Total included in cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	76,324
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	102,185
Total financial assets	178,509	241,157
Recurring | Level 1 | Money market account
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	45,505	241,157
Recurring | Level 1 | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	10,666
Recurring | Level 1 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	20,347
Recurring | Level 1 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Recurring | Level 1 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	30,819
Total marketable securities	71,172
Recurring | Level 1 | Total included in cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	76,324
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	42,986
Total financial assets	42,986	0
Recurring | Level 2 | Money market account
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Recurring | Level 2 | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Recurring | Level 2 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Recurring | Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	42,986
Recurring | Level 2 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0
Total marketable securities	0
Recurring | Level 2 | Total included in cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Total financial assets	0	0
Recurring | Level 3 | Money market account
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	$ 0
Recurring | Level 3 | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Recurring | Level 3 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Recurring | Level 3 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total marketable securities	0
Recurring | Level 3 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0
Total marketable securities	0
Recurring | Level 3 | Total included in cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 0

Fair Value Measurements - Contr

Fair Value Measurements - Contractual Maturities of Marketable Securities (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Amortized cost
Less than one year	$ 145,051
Total	145,051
Aggregate fair value
Less than one year	145,171
Total	$ 145,171

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Maturities of marketable securities	$ 33,100,000	$ 33,100,000
Interest earned on marketable securities (less than)	400,000	600,000
Accrued interest, after allowance for credit loss	400,000	400,000
Convertible notes | 2026 Convertible Notes
Debt Instrument [Line Items]
Fair value	260,600,000	260,600,000	$ 427,100,000
Convertible notes | 2028 Convertible Notes
Debt Instrument [Line Items]
Fair value	$ 147,900,000	$ 147,900,000	$ 194,200,000

Financial Statement Component_2

Financial Statement Components - Schedule of Accounts Receivable, net of Allowances (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial Statement Components [Abstract]
Trade accounts receivable	$ 36,963	$ 31,036
Unbilled accounts receivable	40,396	31,786
Allowance for doubtful accounts and reserve for expected credit losses	(792)	(1,661)
Other accounts receivable	30	411
Total accounts receivable, net	$ 76,597	$ 61,572

Financial Statement Component_3

Financial Statement Components - Allowance For Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance, beginning of period	$ (945)	$ (1,364)	$ (1,661)	$ (1,203)
Charged to bad debt expense, net of reversals	(117)	(169)	64	(475)
Deductions	236	54	728	182
Impact of foreign currency translation	34	12	77	29
Balance, end of period	$ (792)	$ (1,467)	$ (792)	$ (1,467)

Financial Statement Component_4

Financial Statement Components - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial Statement Components [Abstract]
Accrued expense	$ 32,609	$ 31,264
Accrued compensation and benefits	17,549	19,042
Accrued sales, use, VAT and telecommunications related taxes	17,327	11,046
Current portion of finance lease	121	177
Income tax payable	6,691	3,420
Other accrued expenses	756	972
Total accrued expenses and other current liabilities	$ 75,053	$ 65,921

Right-of-Use Asset and Lease _3

Right-of-Use Asset and Lease Liabilities - Additional Information (Details)				3 Months Ended		9 Months Ended
	Jun. 05, 2021 USD ($) a	Jun. 04, 2021 USD ($) a	May 27, 2021 USD ($) ft² lease	Sep. 30, 2022 USD ($) ft² lease	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) ft² lease	Sep. 30, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Option to extend, term (up to)				5 years		5 years
Number of leases with early-termination option | lease				1		1
Short-term operating lease expense				$ 200,000	$ 400,000	$ 400,000	$ 1,100,000
Consideration for the proposed Land purchase						0	30,017,000
Proceeds from sale of land						0	17,462,000
Right-of-use assets obtained in exchange for new operating lease liabilities						3,322,000	$ 553,000
Property
Lessee, Lease, Description [Line Items]
Land (acres) | a	17.06	40
Consideration for the proposed Land purchase		$ 30,000,000
Lease incentive				$ 8,500,000		8,500,000
Property | Developer
Lessee, Lease, Description [Line Items]
Area of land sold (acres) | a	23.76
Proceeds from sale of land	$ 17,500,000
Lease not yet commenced
Lessee, Lease, Description [Line Items]
Office space (in square foot) | ft²			534,000
Term of lease			20 years
Number of option to extend | lease			2
Term of option to extend			10 years
Market rental rate (as a percent)			100%
Escrow to fund			$ 17,500,000
Right-of-use assets obtained in exchange for new operating lease liabilities						$ 0
Lease not yet commenced | Developer
Lessee, Lease, Description [Line Items]
Security deposit			$ 2,500,000
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term (in years)				1 month		1 month
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term (in years)				4 years 3 months		4 years 3 months
Relay, Inc
Lessee, Lease, Description [Line Items]
Sublease area (in square foot) | ft²				17,073		17,073

Right-of-Use Asset and Lease _4

Right-of-Use Asset and Lease Liabilities - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease cost	$ 1,809	$ 1,699	$ 6,037	$ 5,002
Depreciation of assets	44	60	138	165
Interest on lease liabilities	3	5	10	14
Sublease income	(14)	(96)	(206)	(288)
Total net lease cost	$ 1,842	$ 1,668	$ 5,979	$ 4,893

Right-of-Use Asset and Lease _5

Right-of-Use Asset and Lease Liabilities - Supplemental Balance Sheet Lease Information (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets:
Operating lease assets	$ 11,251	$ 14,061
Finance lease assets	286	373
Total leased assets	11,537	14,434
Current
Operating	7,166	5,807
Finance	121	177
Non-current
Operating	6,426	10,958
Finance	156	202
Total lease liabilities	$ 13,869	$ 17,144
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Accumulated amortization	$ 17,500	$ 14,800
Accumulated depreciation of assets under finance leases	$ 300	$ 200

Right-of-Use Asset and Lease _6

Right-of-Use Asset and Lease Liabilities - Supplemental Cash Flow and Other Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 5,623	$ 4,535
Financing cash flows from finance leases	162	161
Lease liabilities	$ 5,785	$ 4,696
Weighted average remaining lease term (in years)
Operating leases	2 years 3 months 10 days	3 years 1 month 20 days
Finance leases	2 years 5 months 23 days	2 years 6 months 21 days
Weighted average discount rate
Operating leases	4.61%	4.77%
Finance leases	4.50%	4%

Right-of-Use Asset and Lease _7

Right-of-Use Asset and Lease Liabilities - Schedule of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Operating Leases
2022 (remaining)	$ 1,580
2023	8,030
2024	2,560
2025	1,532
2026	599
Total lease payments	14,301
Less: imputed interest	(709)
Total lease obligations	13,592
Less: current obligations	(7,166)	$ (5,807)
Long-term lease obligations	6,426	10,958
Finance Leases
2022 (remaining)	30
2023	130
2024	86
2025	37
2026	11
Total lease payments	294
Less: imputed interest	(17)
Total lease obligations	277
Less: current obligations	(121)	(177)
Long-term lease obligations	$ 156	$ 202

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total cost	$ 147,370	$ 139,336
Less—accumulated depreciation	(74,165)	(69,732)
Total property, plant and equipment, net	73,205	69,604
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total cost	2,197	2,240
Computer and office equipment
Property, Plant and Equipment [Line Items]
Total cost	7,638	5,419
Telecommunications equipment
Property, Plant and Equipment [Line Items]
Total cost	77,855	76,963
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total cost	6,212	6,970
Software
Property, Plant and Equipment [Line Items]
Total cost	7,188	6,942
Internal-use software development
Property, Plant and Equipment [Line Items]
Total cost	24,100	22,917
Automobile
Property, Plant and Equipment [Line Items]
Total cost	582	616
Land
Property, Plant and Equipment [Line Items]
Total cost	$ 21,598	$ 17,269

Property, Plant and Equipment_2

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Capitalized software development costs, additions	$ 0.9	$ 0.8	$ 2.1	$ 3.2
Amortization of capitalized software development costs	0.6	$ 0.5	1.6	$ 1.4
Capitalized implementation costs related to cloud computing arrangements	0.3		0.3
Cost of assets under finance leases	0.6		0.6
Accumulated depreciation of assets under finance leases	0.3		0.3		$ 0.2
Prepaid expenses and other current assets
Property, Plant and Equipment [Line Items]
Capitalized implementation costs related to cloud computing arrangements	0.1		0.1
Other long-term assets
Property, Plant and Equipment [Line Items]
Capitalized implementation costs related to cloud computing arrangements	$ 0.2		$ 0.2

Property, Plant and Equipment_3

Property, Plant and Equipment - Depreciation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Total depreciation expense	$ 4,661	$ 4,469	$ 13,848	$ 12,983
Cost of revenue
Property, Plant and Equipment [Line Items]
Total depreciation expense	3,403	3,138	10,141	9,345
Research and development
Property, Plant and Equipment [Line Items]
Total depreciation expense	610	578	1,767	1,539
Sales and marketing
Property, Plant and Equipment [Line Items]
Total depreciation expense	346	214	1,027	787
General and administrative
Property, Plant and Equipment [Line Items]
Total depreciation expense	$ 302	$ 539	$ 913	$ 1,312

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (38,276)		$ (30,334)
Net Carrying Value	169,874
Gross Amount	208,774		241,551
Net Carrying Value	170,498		211,217
Licenses, indefinite lived
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Licenses, indefinite lived	624		764
Customer relationships
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Amount	134,579		155,081
Accumulated Amortization	(21,889)		(16,861)
Net Carrying Value	$ 112,690		138,220
Customer relationships | Minimum
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization Period	15 years	15 years
Customer relationships | Maximum
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization Period	20 years	20 years
Developed technology
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Amount	$ 70,743		82,548
Accumulated Amortization	(13,559)		(10,315)
Net Carrying Value	$ 57,184		72,233
Amortization Period	10 years	10 years
Other, definite lived
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Amount	$ 2,828		3,158
Accumulated Amortization	(2,828)		(3,158)
Net Carrying Value	$ 0		$ 0
Other, definite lived | Minimum
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization Period	2 years	2 years
Other, definite lived | Maximum
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization Period	7 years	7 years

Intangible Assets - Amortizatio

Intangible Assets - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Goodwill [Line Items]
Total amortization expense	$ 4,118	$ 4,764	$ 13,018	$ 14,495
Cost of revenue
Goodwill [Line Items]
Total amortization expense	1,831	2,128	5,797	6,479
Sales and marketing
Goodwill [Line Items]
Total amortization expense	$ 2,287	$ 2,636	$ 7,221	$ 8,016

Intangible Assets - Additional

Intangible Assets - Additional Information (Details)	9 Months Ended
	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Weighted average useful life	11 years 3 months 18 days

Intangible Assets - Future Esti

Intangible Assets - Future Estimated Amortization Expense (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2022 (remaining)	$ 3,968
2023	15,873
2024	15,873
2025	15,873
2026	15,873
Thereafter	102,414
Net Carrying Value	$ 169,874

Debt - Revolving Loan (Details)

Debt - Revolving Loan (Details) - USD ($)	Jun. 06, 2022	Sep. 30, 2022
Debt Instrument [Line Items]
Outstanding unamortized loan fees		$ 500,000
Prepaid expenses and other current assets
Debt Instrument [Line Items]
Outstanding unamortized loan fees		200,000
Other long-term assets
Debt Instrument [Line Items]
Outstanding unamortized loan fees		300,000
Line of Credit | Revolving Loan | Silicon Valley Bank Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	$ 50,000,000
Unused portion of borrowing commitment	0.0625%
Minimum liquidity	$ 70,000,000
Line of credit		0
Available borrowing capacity		$ 50,000,000
Line of Credit | Revolving Loan | Silicon Valley Bank Credit Facility | Minimum | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Line of Credit | Revolving Loan | Silicon Valley Bank Credit Facility | Minimum | Base rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Line of Credit | Revolving Loan | Silicon Valley Bank Credit Facility | Maximum | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate	2%
Line of Credit | Revolving Loan | Silicon Valley Bank Credit Facility | Maximum | Base rate
Debt Instrument [Line Items]
Basis spread on variable rate	1%
Line of Credit | Swing line | Silicon Valley Bank Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	$ 5,000,000
Line of Credit | Credit commitments | Silicon Valley Bank Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	$ 20,000,000

Debt - 2026 Convertible Notes (

Debt - 2026 Convertible Notes (Details)		9 Months Ended		12 Months Ended
	Feb. 28, 2020 USD ($) day $ / shares	Sep. 30, 2022 USD ($)	Sep. 30, 2021 $ / shares	Sep. 30, 2022 USD ($) day	Dec. 31, 2021 USD ($)	Mar. 16, 2021 $ / shares	Jan. 01, 2021 USD ($)
Class A voting common stock
Debt Instrument [Line Items]
Common stock, par value (in usd per share) | $ / shares	$ 0.001					$ 0.001
2026 Convertible Notes
Debt Instrument [Line Items]
Redemption period scheduled trading day before the maturity date	40 days
Cash redemption price (as a percent)	100%
2026 Convertible Notes | Convertible notes
Debt Instrument [Line Items]
Principal amount	$ 400,000,000	$ 400,000,000		$ 400,000,000	$ 400,000,000
Stated rate (as a percent)	0.25%
Total net proceeds	$ 344,700,000
Conversion price (in usd per share) | $ / shares	$ 91.03		$ 91.03
Conversion option	$ 125,200,000
Effective interest rate (as a percent)	6.763%
Carrying amount of equity component	$ 57,500,000
Annual effective interest rate (as a percent)	6.907%
Issuance costs					$ 3,742,000
2026 Convertible Notes | Convertible notes | Cumulative effect of adoption, adjusted balance | Accounting Standards Update 2020-06
Debt Instrument [Line Items]
Effective interest rate (as a percent)							0.513%
Issuance costs attributable to the liability component							$ 8,200,000
Issuance costs							$ 3,700,000
2026 Convertible Notes | Convertible notes | Conversion option 2
Debt Instrument [Line Items]
Trading days | day	5
Consecutive trading days | day	10
2026 Convertible Notes | Convertible notes | Class A voting common stock
Debt Instrument [Line Items]
Conversion ratio	0.0109857	0.0109857	0.0109857
2026 Convertible Notes | Convertible notes | Class A voting common stock | Conversion option 1
Debt Instrument [Line Items]
Stock price trigger (as a percent)	130%			130%
Trading days | day	20			20
Consecutive trading days | day	30			30
2026 Convertible Notes | Convertible notes | Class A voting common stock | Conversion option 2
Debt Instrument [Line Items]
Stock price trigger (as a percent)	98%

Debt - 2028 Convertible Notes (

Debt - 2028 Convertible Notes (Details)		9 Months Ended
	Mar. 16, 2021 USD ($) day $ / shares	Sep. 30, 2022 USD ($)	Sep. 30, 2021 $ / shares	Dec. 31, 2021 USD ($)	Jan. 01, 2021 USD ($)	Feb. 28, 2020 $ / shares
Class A voting common stock
Debt Instrument [Line Items]
Common stock, par value (in usd per share) | $ / shares	$ 0.001					$ 0.001
2028 Convertible Notes | Convertible notes
Debt Instrument [Line Items]
Principal amount	$ 250,000,000	$ 250,000,000		$ 250,000,000
Stated rate (as a percent)	0.50%
Total net proceeds	$ 217,000,000
Conversion price (in usd per share) | $ / shares	$ 179.27		$ 179.27
Cash redemption price (as a percent)	100%
Conversion option	$ 66,900,000
Effective interest rate (as a percent)	5.125%
Carrying amount of equity component	$ 39,400,000
Annual effective interest rate (as a percent)	4.959%
Issuance costs				$ 2,019,000
2028 Convertible Notes | Convertible notes | Cumulative effect of adoption, adjusted balance | Accounting Standards Update 2020-06
Debt Instrument [Line Items]
Effective interest rate (as a percent)					0.442%
Issuance costs attributable to the liability component					$ 5,500,000
Issuance costs					$ 2,000,000
2028 Convertible Notes | Convertible notes | Class A voting common stock
Debt Instrument [Line Items]
Conversion ratio	0.0055781	0.0055781	0.0055781
2028 Convertible Notes | Convertible notes | Conversion option 1
Debt Instrument [Line Items]
Trading days | day	20
Consecutive trading days | day	30
2028 Convertible Notes | Convertible notes | Conversion option 1 | Class A voting common stock
Debt Instrument [Line Items]
Stock price trigger (as a percent)	130%
2028 Convertible Notes | Convertible notes | Conversion option 2
Debt Instrument [Line Items]
Trading days | day	5
Consecutive trading days | day	10
2028 Convertible Notes | Convertible notes | Conversion option 2 | Class A voting common stock
Debt Instrument [Line Items]
Stock price trigger (as a percent)	98%

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - Convertible notes - USD ($)	Sep. 30, 2022	Dec. 31, 2021	Mar. 16, 2021	Feb. 28, 2020
Debt Instrument [Line Items]
Total net carrying amount	$ 637,248,000	$ 486,440,000
Total net carrying amount		186,299,000
2026 Convertible Notes
Debt Instrument [Line Items]
Principal	400,000,000	400,000,000		$ 400,000,000
Unamortized discount		(92,034,000)
Unamortized debt issuance costs	(6,837,000)	(6,043,000)
Total net carrying amount	393,163,000	301,923,000
Proceeds allocated to the conversion options (debt discount)		125,152,000
Issuance costs		(3,742,000)
Total net carrying amount		121,410,000
2028 Convertible Notes
Debt Instrument [Line Items]
Principal	250,000,000	250,000,000	$ 250,000,000
Unamortized discount		(60,488,000)
Unamortized debt issuance costs	(5,915,000)	(4,995,000)
Total net carrying amount	$ 244,085,000	184,517,000
Proceeds allocated to the conversion options (debt discount)		66,908,000
Issuance costs		(2,019,000)
Total net carrying amount		$ 64,889,000

Debt - Interest Income and Inte

Debt - Interest Income and Interest Expense Disclosure (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Total interest expense	$ 1,326	$ 7,730	$ 3,973	$ 20,820
2026 Convertible Notes
Debt Instrument [Line Items]
Contractual interest expense	250	250	750	750
Amortization of debt discount		4,664		13,761
Amortization of debt issuance costs	497	306	1,488	903
Total interest expense	747	5,220	2,238	15,414
2028 Convertible Notes
Debt Instrument [Line Items]
Contractual interest expense	313	313	939	678
Amortization of debt discount		2,029		4,366
Amortization of debt issuance costs	266	168	796	362
Total interest expense	$ 579	$ 2,510	$ 1,735	$ 5,406

Debt - Convertible Senior Notes

Debt - Convertible Senior Notes and Capped Call Transactions (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 16, 2021	Feb. 28, 2020
Debt Instrument [Line Items]
Net cost of capped call purchase	$ 25.5	$ 43.3
Class A voting common stock
Debt Instrument [Line Items]
Capped call shares (in shares)	1,394,525	4,394,276
Convertible notes | 2026 Convertible Notes
Debt Instrument [Line Items]
Initial conversion strike price (in usd per share)		$ 91.03
Initial cap price (in usd per share)		$ 137.40
Convertible notes | 2028 Convertible Notes
Debt Instrument [Line Items]
Initial conversion strike price (in usd per share)	$ 179.27
Initial cap price (in usd per share)	$ 260.76

Geographic Information - Reconc

Geographic Information - Reconciliation of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 1,008,399		$ 1,008,399		$ 1,065,539
Revenue	148,325	$ 130,638	416,178	$ 364,775
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	134,214	115,059	371,478	322,762
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	8,900		8,900		$ 9,200
Revenue	$ 14,111	$ 15,579	$ 44,700	$ 42,013

Stockholders' Equity - Common S

Stockholders' Equity - Common Stock (Details) - shares	Sep. 30, 2022	Dec. 31, 2021
Class A voting common stock
Class of Stock [Line Items]
Common stock, shares issued (in shares)	23,358,203	23,177,988
Common stock, shares outstanding (in shares)	23,358,203	23,177,988
Class B voting common stock
Class of Stock [Line Items]
Common stock, shares issued (in shares)	1,965,170	1,965,170
Common stock, shares outstanding (in shares)	1,965,170	1,965,170

Stockholders' Equity - Reserved

Stockholders' Equity - Reserved Shares of Common Stock for Issuance (Details) - shares	Sep. 30, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	4,667,013	3,585,369
Stock options issued and outstanding
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	159,827	180,209
Restricted stock units issued and outstanding
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	1,018,312	344,486
Stock-based awards available for grant under the 2017 Plan
Class of Stock [Line Items]
Common stock reserved for future issuance (in shares)	3,488,874	3,060,674

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Details) - USD ($)				3 Months Ended		9 Months Ended
	Jan. 01, 2022	Jan. 01, 2018	Nov. 09, 2017	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)				4,667,013		4,667,013		3,585,369
Granted (in shares)				0	0	0	0
Unrecognized cost for stock based compensation				$ 0		$ 0
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)				159,827		159,827		180,209
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)				1,018,312		1,018,312		344,486
Unrecognized compensation cost related to non-vested RSUs				$ 46,300,000		$ 46,300,000
Unrecognized cost for stock based compensation, period for recognition (in years)						3 years 3 days
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)			0
2017 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)			1,050,000
Common stock reserved for future issuance, percent increase		5%
Increase in shares available for grant (in shares)	1,158,900
2017 Plan | Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life			10 years

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Number of options outstanding
Beginning balance (in shares)			180,209
Granted (in shares)	0	0	0	0
Exercised (in shares)			(20,382)
Forfeited or cancelled (in shares)			0
Ending balance (in shares)	159,827		159,827		180,209
Options vested and exercisable (in shares)	159,827		159,827
Options vested and expected to vest (in shares)	159,827		159,827
Weighted- average exercise price (Per share)
Beginning balance (in usd per share)			$ 10.14
Granted (in usd per share)			0
Exercised (in usd per share)			7.95
Forfeited or cancelled (in usd per share)			0
Ending balance (in usd per share)	$ 10.42		10.42		$ 10.14
Weighted-average exercise price, Options vested and exercisable (in usd per share)	10.42		10.42
Weighted-average exercise price, Options vested and expected to vest (in usd per share)	$ 10.42		$ 10.42
Weighted- average remaining contract life (In years)
Outstanding (in years)			2 years 9 months 25 days		3 years 4 months 20 days
Options vested and exercisable at September 30, 2022			2 years 9 months 25 days
Options vested and expected to vest as of September 30, 2022			2 years 9 months 25 days
Aggregate intrinsic value  (In thousands)
Options outstanding	$ 477		$ 477		$ 11,104
Options vested and exercisable at September 30, 2022	477		477
Options vested and expected to vest as of September 30, 2022	477		477
Aggregate intrinsic value of stock options exercised	0	$ 880	634	$ 9,059
Total estimated grant date fair value of options vested	$ 0	$ 153	$ 0	$ 199

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Unit Activity (Details) - RSUs	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Number of awards outstanding
Beginning balance (in shares) | shares	344,486
Granted (in shares) | shares	965,786
Vested (in shares) | shares	(203,723)
Forfeited or cancelled (in shares) | shares	(88,237)
Ending balance (in shares) | shares	1,018,312
Weighted-average grant date fair value (Per share)
Beginning balance (in usd per share) | $ / shares	$ 82.38
Granted (in usd per share) | $ / shares	47.87
Vested (in usd per share) | $ / shares	62.70
Forfeited or cancelled (in usd per share) | $ / shares	75.67
Ending balance (in usd per share) | $ / shares	$ 54.32

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$ 4,892	$ 3,825	$ 15,059	$ 11,592
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	93	80	283	275
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	1,767	877	5,298	2,892
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	593	603	2,219	1,847
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$ 2,439	$ 2,265	$ 7,259	$ 6,578

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Thousands	May 27, 2021 USD ($) lease	Sep. 30, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Non-cancellable purchase obligation		$ 14,700
Non-cancellable purchase obligation, fulfilled within a year		11,800
Lease payments of initial term		$ 14,301
Project
Lessee, Lease, Description [Line Items]
Commencement date, rent abatement period	120 days
Commencement delivered period	12 months
Number of option to extend | lease	2
Term of option to extend	10 years
Base rent percentage (as a percent)	1.85%
Lease payments of initial term	$ 495,700
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term (in years)		4 years 3 months

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Retirement Benefits [Abstract]
Matching contributions	$ 1	$ 0.8	$ 3.2	$ 2.6

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	53.50%	(4.80%)	7.70%	(1.30%)

Related Parties (Details)

Related Parties (Details) - Relay - Master Services Agreement - Affiliated Entity - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Revenue from related parties	$ 0.3	$ 0.4	$ 1.1	$ 1.4
Receivable (less than)	$ 0.1		$ 0.1		$ 0.1

Basic and Diluted Loss per Co_3

Basic and Diluted Loss per Common Share - Components of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net loss attributable to common stockholders, basic	$ (802)	$ (6,944)	$ (13,864)	$ (19,188)
Net loss attributable to common stockholders, diluted	$ (802)	$ (6,944)	$ (13,864)	$ (19,188)
Net loss per share, basic and diluted
Net loss per share, basic (in usd per share)	$ (0.03)	$ (0.28)	$ (0.55)	$ (0.77)
Net loss per share, diluted (in usd per share)	$ (0.03)	$ (0.28)	$ (0.55)	$ (0.77)
Weighted average number of common shares outstanding, basic and diluted
Weighted average number of common shares outstanding, basic (in shares)	25,304,057	25,114,762	25,268,216	25,075,941
Weighted average number of common shares outstanding, diluted (in shares)	25,304,057	25,114,762	25,268,216	25,075,941

Basic and Diluted Loss per Co_4

Basic and Diluted Loss per Common Share - Schedule of Antidilutive Common Share Equivalents Excluded from Earnings Per Share (Details)			9 Months Ended
	Mar. 16, 2021 $ / shares	Feb. 28, 2020 $ / shares	Sep. 30, 2022 shares	Sep. 30, 2021 $ / shares shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)			6,966,944	1,869,084
Convertible notes | 2026 Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion price (in usd per share) | $ / shares		$ 91.03		$ 91.03
Convertible notes | 2026 Convertible Notes | Class A voting common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion ratio		0.0109857	0.0109857	0.0109857
Convertible notes | 2028 Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion price (in usd per share) | $ / shares	$ 179.27			$ 179.27
Convertible notes | 2028 Convertible Notes | Class A voting common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion ratio	0.0055781		0.0055781	0.0055781
Stock options issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)			159,827	183,271
Restricted stock units issued and outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)			1,018,312	369,614
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)			5,788,805	1,316,199

Subsequent Event (Details)

Subsequent Event (Details) - 2026 Convertible Notes - Convertible notes			12 Months Ended
	Nov. 02, 2022 day	Feb. 28, 2020 USD ($) day	Sep. 30, 2022 USD ($) day	Nov. 29, 2022 USD ($)	Nov. 28, 2022 USD ($)	Dec. 31, 2021 USD ($)
Subsequent Event [Line Items]
Principal		$ 400,000,000	$ 400,000,000			$ 400,000,000
Conversion option 1 | Class A voting common stock
Subsequent Event [Line Items]
Consecutive trading days | day		30	30
Forecast
Subsequent Event [Line Items]
Principal				$ 240,000,000
Subsequent Event
Subsequent Event [Line Items]
Repurchased face amount					$ 160,000,000
Repurchased face amount, discount					29%
Subsequent Event | Conversion option 1 | Class A voting common stock
Subsequent Event [Line Items]
Consecutive trading days | day	15