Alkami Technology (ALKT) 10-Q 4 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover	9 Months Ended
	Sep. 30, 2021shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-40321
Entity Registrant Name	ALKAMI TECHNOLOGY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-3060776
Entity Address, Address Line One	5601 Granite Parkway,
Entity Address, Address Line Two	Suite 120
Entity Address, City or Town	Plano,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75204
City Area Code	877
Local Phone Number	725-5264
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	ALKT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	88,147,853
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001529274
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 314,402,000	$ 166,790,000
Accounts receivable, net	20,281,000	14,103,000
Deferred implementation costs, current	5,736,000	4,745,000
Prepaid expenses and other current assets	10,399,000	7,598,000
Total current assets	350,818,000	193,236,000
Property and equipment, net	10,891,000	10,461,000
Deferred implementation costs, net of current portion	15,478,000	14,858,000
Intangibles, net	11,309,000	8,266,000
Goodwill	48,391,000	16,218,000
Other assets	4,905,000	6,127,000
Total assets	441,792,000	249,166,000
Current liabilities
Current portion of long-term debt	1,250,000	313,000
Accounts payable	2,538,000	360,000
Accrued liabilities	24,732,000	13,099,000
Deferred rent and tenant allowance, current	691,000	596,000
Deferred revenues, current portion	6,893,000	6,116,000
Total current liabilities	36,104,000	20,484,000
Long-term debt, net	23,668,000	24,566,000
Warrant liability	0	2,692,000
Deferred revenues, net of current portion	13,234,000	14,424,000
Deferred rent and tenant allowance, net of current portion	5,375,000	5,867,000
Other non-current liabilities	17,893,000	1,393,000
Total liabilities	96,274,000	69,426,000
Commitments and contingencies (Note 13)
Redeemable convertible preferred stock, $0.001 par, 0 and 72,799,602 shares authorized and 0 and 72,225,916 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	0	443,263,000
Stockholders’ Equity (Deficit)
Preferred stock, $0.001 par, 10,000,000 and 0 shares authorized and 0 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	0	0
Common stock, $0.001 par, 500,000,000 and 101,671,156 shares authorized and 88,147,853 and 4,909,529 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	88,000	5,000
Additional paid-in capital	645,934,000	0
Accumulated deficit	(300,504,000)	(263,528,000)
Total stockholders’ equity (deficit)	345,518,000	(263,523,000)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$ 441,792,000	$ 249,166,000

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Redeemable convertible preferred stock, authorized (in shares)	0	72,799,602
Redeemable convertible preferred stock, issued (in shares)	0	72,225,916
Redeemable convertible preferred stock, outstanding (in shares)	0	72,225,916
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	10,000,000	0
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	101,671,156
Common stock, shares issued	88,147,853	4,909,529
Common stock, shares outstanding	88,147,853	4,909,529

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenues	$ 39,761	$ 28,941	$ 109,724	$ 78,817
Cost of revenues	17,387	13,776	49,064	38,914
Gross profit	22,374	15,165	60,660	39,903
Research and development	12,877	9,898	35,897	29,367
Sales and marketing	7,309	3,998	18,132	12,548
General and administrative	13,330	7,859	36,525	21,868
Total operating expenses	33,516	21,755	90,554	63,783
Loss from operations	(11,142)	(6,590)	(29,894)	(23,880)
Interest income	223	8	364	46
Interest expense	(300)	(22)	(908)	(225)
Loss on financial instruments	0	(14,743)	(3,035)	(14,810)
Loss before income taxes	(11,219)	(21,347)	(33,473)	(38,869)
Provision for income taxes	0	0	0	0
Net loss	(11,219)	(21,347)	(33,473)	(38,869)
Less: cumulative dividends and adjustments to redeemable convertible preferred stock	0	(4,459)	(277)	(5,013)
Net loss attributable to common stockholders	(11,219)	(25,806)	(33,750)	(43,882)
Net loss attributable to common stockholders	$ (11,219)	$ (25,806)	$ (33,750)	$ (43,882)
Net loss per share attributable to common stockholders:
Net loss per share attributable to common stockholders - basic (in dollars per share)	$ (0.13)	$ (5.34)	$ (0.60)	$ (9.38)
Net loss per share attributable to common stockholders - diluted (in dollars per share)	$ (0.13)	$ (5.34)	$ (0.60)	$ (9.38)
Weighted average number of shares of common stock outstanding:
Weighted average number of common shares outstanding - basic (in shares)	87,641,416	4,833,079	56,320,288	4,679,933
Weighted average number of common shares outstanding - diluted (in shares)	87,641,416	4,833,079	56,320,288	4,679,933

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2019	54,290,383
Beginning balance at Dec. 31, 2019	$ 210,033
Increase (Decrease) in Temporary Equity [Roll Forward]
Cumulative dividends and adjustments to redeemable convertible preferred stock	$ 5,013
Issuance of redeemable convertible preferred stock, net of issuance (in shares)	17,935,533
Issuance of redeemable convertible preferred stock, net of issuance costs	$ 227,940
Ending balance (in shares) at Sep. 30, 2020	72,225,916
Ending balance at Sep. 30, 2020	$ 442,986
Beginning balance (in shares) at Dec. 31, 2019		4,537,955
Beginning balance at Dec. 31, 2019	(195,390)	$ 5	$ 335	$ (195,730)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,348		1,348
Exercised stock options (in shares)		454,340
Exercised stock options	241		241
Cumulative dividends and adjustments to redeemable convertible preferred stock	(5,013)		(1,032)	(3,981)
Preferred Series E Tranche Liability	(892)		(892)
Net loss	(38,869)			(38,869)
Ending balance (in shares) at Sep. 30, 2020		4,992,295
Ending balance at Sep. 30, 2020	$ (238,575)	$ 5	0	(238,580)
Beginning balance (in shares) at Jun. 30, 2020	57,220,137
Beginning balance at Jun. 30, 2020	$ 249,535
Increase (Decrease) in Temporary Equity [Roll Forward]
Cumulative dividends and adjustments to redeemable convertible preferred stock	$ 4,459
Issuance of redeemable convertible preferred stock, net of issuance (in shares)	15,005,779
Issuance of redeemable convertible preferred stock, net of issuance costs	$ 188,992
Ending balance (in shares) at Sep. 30, 2020	72,225,916
Ending balance at Sep. 30, 2020	$ 442,986
Beginning balance (in shares) at Jun. 30, 2020		4,651,174
Beginning balance at Jun. 30, 2020	(213,351)	$ 5	0	(213,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	439		439
Exercised stock options (in shares)		341,121
Exercised stock options	143		143
Cumulative dividends and adjustments to redeemable convertible preferred stock	(4,459)		(582)	(3,877)
Net loss	(21,347)			(21,347)
Ending balance (in shares) at Sep. 30, 2020		4,992,295
Ending balance at Sep. 30, 2020	$ (238,575)	$ 5	0	(238,580)
Beginning balance (in shares) at Dec. 31, 2020	72,225,916
Beginning balance at Dec. 31, 2020	$ 443,263
Increase (Decrease) in Temporary Equity [Roll Forward]
Payment of Series B Dividend upon initial public offering	(4,969)
Cumulative dividends and adjustments to redeemable convertible preferred stock	$ 277
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)	(72,225,916)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	$ (438,571)
Ending balance (in shares) at Sep. 30, 2021	0
Ending balance at Sep. 30, 2021	$ 0
Beginning balance (in shares) at Dec. 31, 2020		4,909,529
Beginning balance at Dec. 31, 2020	(263,523)	$ 5	0	(263,528)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	7,793		7,793
Exercised stock options (in shares)		4,120,002
Exercised stock options	6,417	$ 4	6,413
Exercised warrants (in shares)		211,323
Exercised warrants	645		645
Cumulative dividends and adjustments to redeemable convertible preferred stock	(277)		(277)	0
Repurchase of common stock (in shares)		(218,917)
Repurchase of common stock	(3,497)		6	(3,503)
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions (in shares)		6,900,000
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions	192,810	$ 7	192,803
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)		72,225,916
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	438,570	$ 72	438,498
Conversion of redeemable convertible preferred stock warrants to common stock warrants upon initial public offering	5,727		5,727
Costs in connection with initial public offering	(5,674)		(5,674)
Net loss	(33,473)			(33,473)
Ending balance (in shares) at Sep. 30, 2021		88,147,853
Ending balance at Sep. 30, 2021	$ 345,518	$ 88	645,934	(300,504)
Beginning balance (in shares) at Jun. 30, 2021	0
Beginning balance at Jun. 30, 2021	$ 0
Ending balance (in shares) at Sep. 30, 2021	0
Ending balance at Sep. 30, 2021	$ 0
Beginning balance (in shares) at Jun. 30, 2021		87,186,730
Beginning balance at Jun. 30, 2021	351,259	$ 87	640,457	(289,285)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,352		3,352
Exercised stock options (in shares)		749,800
Exercised stock options	1,481	$ 1	1,480
Exercised warrants (in shares)		211,323
Exercised warrants	645		645
Net loss	(11,219)			(11,219)
Ending balance (in shares) at Sep. 30, 2021		88,147,853
Ending balance at Sep. 30, 2021	$ 345,518	$ 88	$ 645,934	$ (300,504)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss		$ (33,473)	$ (38,869)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense		2,384	1,970
Stock-based compensation expense		7,793	1,348
Amortization of debt issuance costs		39	39
Loss on financial instruments		3,035	14,810
Changes in operating assets and liabilities:
Accounts receivable		(5,741)	(2,565)
Prepaid expenses and other current assets		(689)	(1,711)
Accounts payable and accrued liabilities		12,758	4,107
Deferred implementation costs		(1,612)	(2,158)
Deferred rent and tenant allowances		(397)	213
Deferred revenues		(899)	(306)
Net cash used in operating activities		(16,802)	(23,122)
Cash flows from investing activities:
Purchases of property and equipment		(870)	(1,478)
Capitalized software development costs		(1,275)	0
Acquisition of business(1)	[1]	(18,326)	0
Net cash used in investing activities		(20,471)	(1,478)
Cash flows from financing activities:
Borrowings on line of credit		0	13,000
Payments on line of credit		0	(13,000)
Proceeds from stock option exercises		6,417	241
Proceeds from exercise of warrants		645	0
Proceeds on sales of preferred stock, net of issuance costs		0	218,040
Deferred IPO issuance costs paid		(4,520)	0
Payments on capital lease obligations		0	(11)
Repurchase of common stock		(3,497)	0
Proceeds from issuance of common stock upon initial public offering, net of underwriting discounts and commissions		192,810	0
Payment of Series B dividend		(4,969)	0
Net cash provided by financing activities		186,886	218,270
Net increase in cash and cash equivalents and restricted cash		149,613	193,670
Cash and cash equivalents and restricted cash, beginning of period		171,663	11,982
Cash and cash equivalents and restricted cash, end of period		$ 321,276	$ 205,652
[1]	See Note 3 for additional information regarding noncash investing activities for the nine months ended September 30, 2021, related to the acquisition of MK.

Organization

Organization	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Description of Business Alkami Technology, Inc. (the “Company”) is a cloud-based digital banking solutions provider. The Company inspires and empowers community, regional and super-regional financial institutions (“FIs”) to compete with large, technologically advanced and well-resourced banks in the United States. The Company’s solution, the Alkami Platform, allows FIs to onboard and engage new users, accelerate revenues and meaningfully improve operational efficiency, all with the support of a proprietary, true cloud-based, multi-tenant architecture. The Company cultivates deep relationships with its clients through long-term, subscription-based contractual arrangements, aligning its growth with its clients’ success and generating an attractive unit economic model. The Company was incorporated in Delaware in August 2011, and its principal offices are located in Plano, Texas. Initial Public Offering On April 13, 2021, the Company's registration statement relating to the initial public offering ("IPO") of its common stock was declared effective by the Securities and Exchange Commission ("SEC"). In connection with its IPO, the Company issued and sold 6,900,000 shares of common stock (including 900,000 shares issued pursuant to the exercise in full of the underwriters' option to purchase additional shares) at a public offering price of $30.00 per share for net proceeds of $192.8 million, after deducting underwriters' discounts and commissions (excluding other IPO costs). Prior to the Company’s IPO, deferred offering costs, which consist of legal, accounting, consulting and other direct fees and costs relating to its IPO, were capitalized in prepaid expenses and other current assets. Upon consummation of the Company’s IPO, these costs were offset against the proceeds from its IPO and recorded in additional paid-in capital. In addition, in connection with its IPO, the Company's certificate of incorporation was amended and restated such that the total number of shares of common stock authorized to be issued was increased to 500,000,000 shares and the total number of shares of preferred stock authorized to be issued was reduced to 10,000,000 shares. Immediately prior to the effectiveness of the Company’s registration statement, the Company’s outstanding shares of redeemable convertible preferred stock converted into an aggregate of 72,225,916 shares of common stock. With the proceeds of its IPO, the Company paid in full accumulated dividends on its previously outstanding shares of Series B redeemable convertible preferred stock, which totaled approximately $5.0 million. All of the Company’s outstanding warrants exercisable for shares of redeemable convertible preferred stock converted into warrants exercisable for 212,408 shares of common stock and were classified as equity immediately prior to the effectiveness of the Company’s registration statement.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The accompanying financial statements reflect the application of significant accounting policies as described below. Basis of Presentation and Consolidation The interim unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. All intercompany accounts and transactions are eliminated. In the Company's opinion, the accompanying interim unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting of normal, recurring adjustments, necessary to present fairly the financial position, results of operations and cash flows for the periods indicated. Certain information and disclosures normally included in the notes to the annual consolidated financial statements prepared in accordance with GAAP have been omitted from these interim unaudited condensed consolidated financial statements pursuant to the rules and regulations of the SEC. Accordingly, these interim unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the accompanying notes for the fiscal year ended December 31, 2020, which are included in the final prospectus (the “Prospectus”) for the Company’s IPO filed with the SEC on April 15, 2021 pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended. Operating results for the three and nine months ended September 30, 2021 are not necessarily indicative of results that may be expected for any other interim period or for the year ending December 31, 2021. The Company has no sources of other comprehensive income, and accordingly, net loss presented each period is the same as comprehensive loss. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates and assumptions include determining the timing and amount of revenue recognition, recoverability and amortization period related to costs to obtain and fulfill contracts, and valuation of the Company’s stock options. Fair Value of Financial Instruments The Company’s financial instruments consist primarily of cash, restricted cash and cash equivalents, accounts receivable, accounts payable, long-term debt, stock warrants and contingent consideration. The carrying values of cash, restricted cash and cash equivalents, accounts receivable, and accounts payable approximate their respective fair values due to the short-term nature of these instruments. The carrying value of long-term debt approximates its fair value due to the variable interest rate. Cash equivalents include amounts held in money market accounts that are measured at fair value using observable market prices. Warrant liabilities are valued using the Black-Scholes option pricing method and are presented at estimated fair value at the end of the reporting period. The assumptions used in preparing the Black-Scholes option pricing calculation include weighted average grant date fair value, volatility, risk-free interest rate, dividends, and weighted average expected life in years. Changes in the fair value of warrant liabilities are recognized as a gain or loss within non-operating income (expense). In connection with the Company’s IPO, warrants converted from a liability instrument to an equity instrument resulting in a reduction of the warrant liability to $0. The Company values contingent consideration related to business combinations using a weighted probability calculation of potential payment scenarios discounted at rates reflective of the risks associated with the expected future cash flows. The Company uses a three-tier fair value hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value: Level 1. Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2. Significant other inputs that are directly or indirectly observable in the marketplace. Level 3. Significant unobservable inputs which are supported by little or no market activity. The Company evaluates 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 table summarizes the Company’s financial assets measured at fair value as of September 30, 2021 and December 31, 2020 and indicates the fair value hierarchy of the valuation: Fair Value at Reporting Date Using (In thousands) September 30, 2021 Level 1 Level 2 Level 3 Assets: Money Market Accounts $ 14,647 $ 14,647 $ — $ — Total Assets $ 14,647 $ 14,647 $ — $ — Liabilities: Contingent consideration payable $ (15,500) $ — $ — $ (15,500) Total Liabilities $ (15,500) $ — $ — $ (15,500) Fair Value at Reporting Date Using (In thousands) December 31, 2020 Level 1 Level 2 Level 3 Assets: Money Market Accounts $ 143,277 $ 143,277 $ — $ — Total Assets $ 143,277 $ 143,277 $ — $ — Liabilities: Warrant Liabilities $ (2,692) $ — $ — $ (2,692) Total Liabilities $ (2,692) $ — $ — $ (2,692) The reconciliations of the beginning and ending balances during the nine months ended September 30, 2021 for Level 3 assets and liabilities are as follows (in thousands): Asset and liability categories Beginning Level 3 Fair Value at January 1, 2021 Fair value adjustment Adjustment for conversion to equity accounting treatment upon IPO Ending Level 3 Fair Value at September 30, 2021 Warrant Liabilities $ (2,692) $ (3,035) $ 5,727 $ — The following table represents the changes to the Company’s contingent consideration payable (in thousands): Balance at January 1, 2021 $ — Business Combination 15,500 Balance at September 30, 2021 $ 15,500 Restricted Cash The Company defines restricted cash as cash that is legally restricted as to withdrawal or usage. The amounts included in restricted cash on the condensed consolidated balance sheets at September 30, 2021 and December 31, 2020 represent the additional cash proceeds in deposit with an escrow agent for satisfaction of contingent consideration related to the acquisition of ACH Alert, LLC (“ACH Alert”). In addition, restricted cash representing additional cash proceeds in deposit with an escrow agent for satisfaction of a holdback provision related to the acquisition of MK Decisioning Systems, LLC (“MK”) is included in the condensed consolidated balance sheets at September 30, 2021. See Note 3 for further information. September 30, December 31, (in thousands) 2021 2020 Cash and cash equivalents $ 314,402 $ 166,790 Restricted cash included in Prepaid expenses and other current assets 3,500 — Restricted cash included in Other assets 3,374 4,873 Total cash and cash equivalents and restricted cash $ 321,276 $ 171,663 Capitalized Software Development Costs Software development costs relate primarily to software coding, systems interfaces, and testing of the Company’s proprietary systems and are accounted for in accordance with ASC 350-40, Internal Use Software. Internal software development costs are capitalized from the time the internal use software is in the application development stage until the software is ready for use. Business analysis, system evaluation, and software maintenance costs are expensed as incurred. The capitalized software development costs are reported in property and equipment, net in the condensed consolidated balance sheets. The Company had $1.3 million in capitalized internal software development costs as of September 30, 2021 and none as of December 31, 2020. Capitalized software development costs are amortized using the straight-line method over the estimated useful life of the software, generally three Contract Balances Client contracts under which revenues have been recognized while the Company is not yet able to invoice results in contract assets. Generally, contract assets arise as a result of reallocating revenues when discounts are weighted more heavily in the early years of a multi-year contract or the client contract has substantive minimum fees that escalate over the term of the contract. Contract assets totaled $0.8 million and $0.8 million as of September 30, 2021 and December 31, 2020, respectively, which are included in other assets in the accompanying condensed consolidated balance sheets. Contract liabilities are comprised of billings or payments received from the Company’s clients in advance of performance under the contract and are represented in deferred revenues in the condensed consolidated balance sheets. Stock-Based Compensation Stock Options Stock options are accounted for using the grant date fair value method. Under this method, stock-based compensation expense is measured by the estimated fair value of the granted stock options at the date of grant using the Black-Scholes option pricing model and recognized over the vesting period with a corresponding increase to additional paid-in capital. Determining the fair value of stock-based awards at the grant date requires significant judgement. The determination of the grant date fair value of stock-based awards using the Black-Scholes option-pricing model is affected, for periods prior to the Company’s IPO, by the Company’s estimated common stock fair value as well as other subjective assumptions including the volatility, risk-free interest rate, dividends, and weighted average expected life. The assumptions used in the Company’s option-pricing model represent management’s best estimates. These assumptions and estimates are as follows: Fair Value of Common Stock. Given the absence of an active market for the Company’s shares of common stock prior to its IPO, the fair value of the shares of common stock underlying the Company’s stock options was determined by the Company’s board of directors (the “Board”). • Preliminary Offering Price and Options Granted Subsequent to December 31, 2020. During February 2021, the Company granted stock options to purchase shares of its common stock. The Company established the fair value of these grants based on a straight-line interpolation from its December 31, 2020 valuation and the mid-point of its initial price range in order to determine the appropriate stock-based compensation expense for financial reporting purposes. • Initial Public Offering Price and Options Granted Subsequent to April 13, 2021 . The Company’s stock became actively traded upon the completion of its IPO in April 2021. For grants issued upon or subsequent to its IPO the Company establishes fair value based on the Company’s stock price. Volatility: As the Company does not have the necessary trading history for its common stock the selected volatility used is representative of expected future volatility. The Company bases expected future volatility on the historical and implied volatility of comparable publicly traded companies over a similar expected term. Risk-Free Interest Rate: The Company bases the risk-free interest rate on the rate for a U.S. Treasury zero-coupon issue with a term that closely approximates the expected life of the option grant at the date nearest the option grant date. Dividends. The Company has never declared or paid any cash dividends and does not presently intend to pay cash dividends in the foreseeable future, other than the aggregate accumulated dividends paid to holders of the Company’s Series B redeemable convertible preferred stock upon the effectiveness of the Company’s IPO. As a result, the Company used a dividends assumption of zero. Weighted Average Expected Life in Years: The expected term of employee stock options reflects the period for which the Company believes the option will remain outstanding. To determine the expected term, the Company applies the simplified approach in which the expected term of an award is presumed to be the mid-point between the vesting date and the expiration date of the award. In addition to assumptions used in the Black-Scholes option-pricing model, the Company estimates a forfeiture rate to calculate the stock-based compensation expense for its option awards. The Company’s forfeiture rate is based on an analysis of its actual forfeitures. The Company will continue to evaluate the appropriateness of the forfeiture rate based on actual forfeiture experience, analysis of employee turnover and other factors. Restricted Stock Units Restricted stock units (“RSUs”) issued upon and subsequent to the Company’s IPO vest upon the satisfaction of a time-based condition only. These RSUs are generally earned over a service period of three Employee Stock Purchase Plan The Company’s 2021 Employee Stock Purchase Plan (the “ESPP”) permits employees to purchase the Company's common stock through payroll deductions during six month offerings. The offering periods begin each May 16 and November 16, or such other period determined by the compensation committee. In accordance with the guidance in ASC 718-50 - Compensation - Stock Compensation, the ability to purchase shares of the Company’s common stock for 85% of the lower of the price on the first day of the offering period or the last day of the offering period (i.e. the purchase date) represents an option and, therefore, the ESPP is a compensatory plan. Accordingly, stock-based compensation expense is determined based on the grant-date fair value as estimated by applying the Black-Scholes option-pricing model and is recognized over the withholding period. Concentrations of Credit Risk Significant concentrations of credit risk arise from the Company’s revenues and accounts receivable. Management believes that its contract acceptance, billing, and collection policies are adequate to minimize potential credit risk. No client represented more than 10% of revenue for the three and nine months ended September 30, 2021 and 2020. As of September 30, 2021 and December 31, 2020, no client represented more than 10% of accounts receivable. Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “Leases (Topic 842),” to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the condensed consolidated balance sheets and disclosing key information about leasing arrangements. The Company anticipates that the adoption of Topic 842 will impact its condensed consolidated balance sheets as most of its operating lease commitments will be subject to the new standard and recognized as right-of-use assets and corresponding operating lease liabilities upon the adoption of ASU 2016-02. The Company expects to adopt the standard in fiscal year 2021 using the modified retrospective transition approach and interim periods beginning 2022. The Company continues to evaluate quantitative impacts that the adoption of this standard will have. The Company expects total assets and liabilities reported will increase relative to such amounts prior to adoption. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments—Credit Losses (Topic 326),” which modifies the measurement of expected credit losses of certain financial instruments with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The effective date for adoption of the new standard was delayed until calendar years beginning after December 15, 2021, with early adoption permitted. The Company expects to adopt this new standard in interim periods beginning in 2022. This ASU is not expected to have a material impact on the Company’s financial statements.

Business Combination

Business Combination	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Business Combination	Business Combination ACH Alert, LLC On October 4, 2020, the Company announced the acquisition of substantially all of the assets of ACH Alert for approximately $25 million in cash consideration. The integrated set of assets and activities acquired from ACH Alert through the acquisition meet the definition of a business under ASC 805, as updated by ASU 2017-01. A term loan of $25.0 million (“Term Loan”) was borrowed on October 16, 2020 to partially fund the acquisition of ACH Alert (see Note 8). The ACH Alert acquisition also involved $4.9 million of additional cash consideration that the Company placed on deposit with an escrow agent to be paid upon the continued employment of one of the owners of ACH Alert, of which $2.5 million is to be paid in October 2021 and $2.4 million is to be paid in October 2022. Since the payouts are contingent upon the continued and future employment of the former owner, these amounts have been excluded from the purchase price. The Company has classified the amounts held in escrow as restricted cash on the condensed consolidated balance sheets and is accruing the estimated payouts over the requisite service period as a component of general and administrative expense on the condensed consolidated statements of operations. For the three and nine months ended September 30, 2021, the Company recognized compensation expense of $0.6 million and $1.9 million, respectively, related to this agreement. The Company’s preliminary fair value estimates and assumptions to measure the assets acquired and liabilities assumed were subject to change as the Company obtained additional information during the measurement period. The following table summarizes the fair value amounts recognized as of the acquisition date for each major class of asset acquired or liability assumed, as well as adjustments made during the measurement period: (in thousands) Preliminary Fair Value as of October 4, 2020 Measurement Period Adjustments Adjusted Fair Value as of March 31, 2021 Trade accounts receivables $ 915 $ — $ 915 Other current assets 47 (14) 33 Property and equipment 20 — 20 Goodwill 16,218 324 16,542 Intangible assets 8,450 — 8,450 Total assets acquired $ 25,650 $ 310 $ 25,960 Accounts payable $ 61 $ 5 $ 66 Accrued liabilities — 4 4 Deferred revenues, current 170 — 170 Deferred revenues, net of current 346 (25) 321 Total liabilities assumed 577 (16) 561 Net assets acquired $ 25,073 $ 326 $ 25,399 As of March 31, 2021, the allocation of the purchase price for ACH Alert was finalized. The table below outlines the purchased identifiable intangible assets: Weighted Average Amortization Period Total (in years) (in thousands) Customer relationships 15 $ 5,100 Developed technology 7 3,300 Trade names 2 50 Total identifiable intangible assets $ 8,450 Goodwill is mainly attributable to advantages expected from the acquisition such as giving the Company a complimentary solution to its existing platform offering, especially for banks. It is also expected to position the Company to better penetrate the banking market. This goodwill is expected to be deductible for tax purposes. No material transaction costs are included within the condensed consolidated statements of operations for the three and nine months ended September 30, 2021 and 2020. MK Decisioning Systems, LLC On September 10, 2021, the Company acquired substantially all of the assets of MK for approximately $20 million in cash consideration due at closing subject to a $2 million holdback provision held in escrow with $1 million to be released at the 12-month anniversary of close and the remainder to be released at the 18-month anniversary of close. The Company also agreed to assume certain liabilities associated with MK’s business. The integrated set of assets and activities acquired from MK through the acquisition meet the definition of a business under ASC 805, as updated by ASU 2017-01. In addition to the base purchase price, the MK acquisition also included a potential earn-out that is tied to revenue of MK from sales of its products and services within two 12-month periods (the “First Earn-Out Period” and “Second Earn-Out Period”), with the First Earn-Out Period beginning on January 1, 2022 and ending on December 31, 2022 and the Second Earn-Out Period beginning on January 1, 2023 and ending on December 31, 2023. Pursuant to the terms and conditions set forth in the purchase agreement, the earn-out amount payable, if any, to the former owners, will be a maximum of $7.5 million and $17.5 million for the First Earn-Out Period and Second Earn-Out Period, respectively, contingent on achievement of certain revenue milestones. In certain circumstances within both Earn-Out Periods, the earn-out amounts are payable in a mix of cash and shares (based on a reference price of $35 and limited to $20 million in earn-out shares) of the Company’s common stock subject to the election of the former owners. Earn-out amounts, if any, would be payable no later than 170 days after the end of each Earn-Out Period. The Company has classified the amounts held in escrow as restricted cash on the condensed consolidated balance sheets. The fair value of the contingent earn-out as of September 30, 2021 is $15.5 million for which the balance is included in Other non-current liabilities on the condensed consolidated balance sheets. The fair value of the contingent earn-out is included as contingent consideration in the total purchase price. The Company will remeasure the fair value of the contingent consideration on an ongoing basis and will record the adjustment to operating income or loss. Assumptions used to estimate the fair value of contingent consideration include various financial metrics (revenue performance targets and stock price forecasts) and the probability of achieving the specific targets using a geometric binomial model. Based on the preliminary purchase accounting, the Company determined that approximately 62% of the maximum contingent consideration would be paid to the seller in accordance with the terms of the purchase agreement. The Company’s preliminary fair value estimates and assumptions to measure the assets acquired and liabilities assumed are subject to change as the Company obtains additional information during the measurement period. The following table summarizes the fair value amounts recognized as of the acquisition date for each major class of asset acquired or liability assumed: (in thousands) Preliminary Fair Value as of September 10, 2021 Trade accounts receivables $ 437 Other current assets 56 Property and equipment 41 Goodwill 31,849 Intangible assets 3,670 Total assets acquired $ 36,053 Accounts payable and accrued liabilities $ 43 Deferred revenues, net of current 510 Total liabilities assumed 553 Net assets acquired $ 35,500 As of September 30, 2021, the allocation of the purchase price for MK has not been finalized, and the one-year measurement period has not ended. The preliminary purchase price allocations are based upon the valuation of assets and liabilities. These estimates and assumptions are subject to change as the Company obtains additional information during the measurement period. The table below outlines the purchased identifiable intangible assets: Weighted Average Amortization Period Total (in years) (in thousands) Customer relationships 15 $ 170 Developed technology 5 3,500 Total identifiable intangible assets $ 3,670 Goodwill is mainly attributable to advantages expected from the acquisition such as giving the Company a complimentary solution to its existing platform offering, especially for banks. This goodwill is expected to be deductible for tax purposes.

Property and Equipment, Net

Property and Equipment, Net	9 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and Equipment, NetDepreciation expense was $0.6 million and $1.8 million for the three and nine months ended September 30, 2021, respectively, and $0.7 million and $2.0 million for the three and nine months ended September 30, 2020, respectively. (in thousands) Useful Life September 30, 2021 December 31, 2020 Software 1 to 3 years $ 1,997 $ 722 Computers and equipment 3 years 4,647 3,821 Furniture and fixtures 5 years 3,977 3,930 Leasehold improvements 3 to 10 years 11,677 11,650 $ 22,298 $ 20,123 Less: accumulated depreciation (11,407) (9,662) Property and equipment, net $ 10,891 $ 10,461

Revenue and Deferred Costs

Revenue and Deferred Costs	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue and Deferred Costs	Revenue and Deferred Costs The Company derives primarily all of its revenues from software-as-a-service (“SaaS”) subscription services charged for the use of its digital banking solutions. Revenues are recognized net of the most likely amount of sales credits and allowances and presented net of sales and usage-based taxes collected from clients on behalf of governmental authorities. SaaS subscription services are generally recognized as revenue over the term of the contract as a series of distinct SaaS services bundled into a single performance obligation. Clients are typically charged a one-time, upfront implementation fee and recurring annual and monthly access fees for the use of the Company’s digital banking solution. Implementation and integration of the digital banking platform is complex, and the Company has determined that the one-time, upfront services are not distinct. In determining whether implementation services are distinct from subscription services, the Company considered various factors including the significant level of integration, interdependency, and interrelation between the implementation and subscription service, as well as the inability of the clients’ personnel or other service providers to perform significant portions of the services. As a result, the Company defers any arrangement fees for implementation services and recognizes such amounts over time on a ratable basis as one performance obligation with the underlying subscription revenue commencing when the client goes live on the platform, which corresponds with the date the client obtains access to the Company’s digital banking solution and begins to benefit from the service. The Company’s performance obligation for the SaaS series of services includes standing ready over the term of the contract to provide access to all of the clients’ users and process any transactions initiated by those users. The Company invoices clients each month for the contracted minimum number of registered users with an additional amount for users in excess of those minimums. The Company recognizes variable consideration related to registered user counts in excess of the contractual minimum amounts each month. SaaS subscription revenues also includes annual and monthly charges for maintenance and support services which are recognized over the subscription term. As mentioned above, SaaS contracts include a single performance obligation that consists of a series of distinct SaaS services transferred over time that are substantially the same each month. Standalone selling prices are not required to allocate revenue amongst the distinct services within the series. The Company uses an analysis of pricing and discounting objectives, expected volume of users above contracted minimums and transactions, and client characteristics to ensure the revenue standards’ allocation objectives have been met. In limited circumstances when a contract calls for certain discounting to be triggered by volumes above contracted minimums, the Company is required to estimate these volumes in order to calculate revenue recognition in line with the standard’s allocation objectives. The following table disaggregates the Company's revenue by major source for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (in thousands) 2021 2020 2021 2020 SaaS subscription services $ 37,486 $ 27,065 $ 103,582 $ 73,723 Implementation services 1,591 1,419 4,604 3,741 Other services 684 457 1,538 1,353 Total revenues $ 39,761 $ 28,941 $ 109,724 $ 78,817 Deferred Cost Recognition The Company capitalized $0.3 million and $0.8 million in deferred commissions costs during the three and nine months ended September 30, 2021, respectively and $0.3 million and $1.1 million for the three and nine months ended September 30, 2020, respectively, and recognized amortization of $0.6 million and $1.6 million during the three and nine months ended September 30, 2021, respectively, and $0.4 million and $1.1 million for the three and nine months ended September 30, 2020, respectively. Amortization expense is included in sales and marketing expenses in the accompanying statements of operations. Deferred commissions are included in deferred implementation costs in the accompanying condensed consolidated balance sheets in the amount of $8.4 million and $9.0 million as of September 30, 2021 and December 31, 2020, respectively. The Company capitalized implementation costs of $1.3 million and $4.0 million during the three and nine months ended September 30, 2021, respectively, and $1.0 million and $3.2 million for the three and nine months ended September 30, 2020, respectively, and recognized amortization of $0.7 million and $1.9 million during the three and nine months ended September 30, 2021, respectively, and $0.5 million and $1.5 million for the three and nine months ended September 30, 2020, respectively. Amortization expense is included in cost of revenues in the accompanying condensed consolidated statements of operations. The Company periodically reviews the carrying amount of deferred costs to determine whether events or changes in circumstances have occurred that could impact the period of benefit. No impairment loss was recognized in relation to these capitalized costs for the three and nine months ended September 30, 2021 and 2020.

Accounts Receivable

Accounts Receivable	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Accounts Receivable	Accounts Receivable Accounts receivable includes the following amounts at September 30, 2021 and December 31, 2020: September 30, December 31, (in thousands) 2021 2020 Trade accounts receivable $ 15,507 $ 11,804 Unbilled receivables 3,776 2,081 Other receivables 1,211 702 Total receivables 20,494 14,587 Allowance for doubtful accounts (57) (323) Reserve for estimated credits (156) (161) $ 20,281 $ 14,103

Accrued Liabilities

Accrued Liabilities	9 Months Ended
	Sep. 30, 2021
Payables and Accruals [Abstract]
Accrued Liabilities	Accrued Liabilities Accrued liabilities consisted of the following at September 30, 2021 and December 31, 2020: September 30, December 31, (in thousands) 2021 2020 Bonus accrual $ 6,804 $ 2,636 Accrued vendor purchases 1,950 2,542 Commissions accrual 1,118 1,309 Accrued hosting services 1,249 924 Client refund liability 1,106 1,362 Deferred compensation payable 2,500 625 Accrued consulting and professional fees 875 207 Accrued tax liabilities 2,947 2,394 Other accrued liabilities 6,183 1,100 Total accrued liabilities $ 24,732 $ 13,099

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt	Debt On October 16, 2020, the Company entered into a credit agreement with Silicon Valley Bank and KeyBank (“Credit Agreement”). The Credit Agreement replaced the prior credit facility provided by Comerica Bank. The Credit Agreement matures on October 16, 2023. The Credit Agreement includes the following: • Revolving Facility: The Credit Agreement provides $25.0 million in aggregate commitments for secured revolving loans, with sub-limits of $10.0 million for the issuance of letters of credit and $7.5 million for swingline loans (“Revolving Facility”). • Term Loan: A Term Loan of $25.0 million was borrowed on the closing date of the Credit Agreement. The proceeds from the Term Loan were used to fund the acquisition of ACH Alert which closed on October 4, 2020. • Accordion Feature: The Credit Agreement also allows the Company, subject to certain conditions, to request additional revolving loan commitments in an aggregate principal amount of up to $30.0 million. Revolving Facility loans under the Credit Agreement may be voluntarily prepaid and re-borrowed. Principal payments on the Term Loan are due in quarterly installments equal to an initial amount of approximately $0.3 million, which begin December 31, 2021 and continue through September 30, 2022 and increase to approximately $0.6 million beginning on December 31, 2022 through the Credit Agreement maturity date. Once repaid or prepaid, the Term Loans may not be re-borrowed. Borrowings under the Credit Agreement bear interest at a variable rate based upon, at the Company’s option, either the LIBOR rate or the base rate (in each case, as customarily defined) plus an applicable margin. The minimum LIBOR rate to be applied is 1.00%. The applicable margin for LIBOR rate loans ranges, based on an applicable recurring revenue leverage ratio, from 3.00% to 3.50% per annum, and the applicable margin for base rate loans ranges from 2.00 to 2.50% per annum. The Company’s minimum interest rate applied to term debt was 4.00% as of September 30, 2021. The Company is required to pay a commitment fee of 0.30% per annum on the undrawn portion available under the Revolving Facility, and variable fees on outstanding letters of credit. All outstanding principal and accrued but unpaid interest is due, and the commitments for the Revolving Facility terminate, on the maturity date. The Term Loans are subject to mandatory repayment requirements in the event of certain asset sales or if certain insurance or condemnation events occur, subject to customary reinvestment provisions. The Company may prepay the Term Loans in whole or in part at any time without premium or penalty. The Credit Agreement contains customary affirmative and negative covenants, as well as (i) an annual recurring revenue growth covenant requiring the loan parties to have recurring revenues in any four consecutive fiscal quarter period in an amount that is 10% greater than the recurring revenues for the corresponding four consecutive quarter period in the previous year and (ii) a liquidity (defined as the aggregate amount of cash in bank accounts subject to a control agreement plus availability under the Revolving Facility) covenant, requiring the loan parties to have liquidity, tested on the last day of each calendar month, of $10.0 million or more. The Credit Agreement also contains customary events of default, which if they occur, could result in the termination of commitments under the Credit Agreement, the declaration that all outstanding loans are immediately due and payable in whole or in part, and the requirement to maintain cash collateral deposits in respect of outstanding letters of credit. The Company was in compliance with all covenants as of September 30, 2021. Long-term Debt The following table summarizes long-term debt obligations as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Term Debt $ 25,000 $ 25,000 Less unamortized debt issuance costs (82) (121) Net amount 24,918 24,879 Less current maturities of long-term debt (1,250) (313) Long-term portion $ 23,668 $ 24,566 Maturities of long-term debt outstanding as of September 30, 2021, are summarized as follows (in thousands): 2021 $ 313 2022 1,562 2023 23,125 Thereafter — Total $ 25,000

Redeemable Convertible Preferre

Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit)	Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) In connection with its IPO, the Company's certificate of incorporation was amended and restated such that the total number of shares of common stock authorized to be issued was increased to 500,000,000 shares and the total number of shares of preferred stock authorized to be issued was reduced to 10,000,000 shares. Repurchase of Common Stock During the three months ended March 31, 2021, former employees obtained a third-party offer for the purchase of 0.2 million shares of common stock held in the Company. As the Company had the right of first refusal for the sale of these shares, the Company repurchased the shares for $3.5 million from the former employees at the price offered. Redeemable Convertible Preferred Stock As of December 31, 2020, the Company was authorized to issue seven classes of stock: common stock, Series A redeemable convertible preferred stock, Series B redeemable convertible preferred stock, Series C redeemable convertible preferred stock, Series D redeemable convertible preferred stock, Series E redeemable convertible preferred stock and Series F redeemable convertible preferred stock. These preferred shares were classified as temporary equity within the Company’s consolidated balance sheet as of December 31, 2020. Immediately prior to the effectiveness of the Company’s registration statement relating to its IPO, the Company’s outstanding shares of redeemable convertible preferred stock converted into an aggregate of 72,225,916 shares of common stock. With the proceeds from its IPO, the Company paid in full accumulated dividends on its previously outstanding shares of Series B redeemable convertible preferred stock, which totaled approximately $5.0 million. As of September 30, 2021, there was no preferred stock issued or outstanding. Warrants

Equity Compensation

Equity Compensation	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Equity Compensation	Equity Compensation On February 25, 2021, the Board approved, subject to stockholder approval which, was obtained on March 23, 2021, the ESPP, pursuant to which employees would be able to purchase shares of the Company’s common stock at a 15% discount. The Board provided for a share reserve with respect to the ESPP of 2% of the total number of shares outstanding after the Company’s IPO. The Board further provided that the share reserve will be refreshed by an evergreen provision of 1% of the Company’s outstanding common stock at the end of the prior year, or such lesser amount as the Board or its Compensation Committee may determine. The Company reserved 2,205,790 shares of common stock for future issuance under the ESPP. On February 25, 2021, the Board approved, subject to stockholder approval, which was obtained on March 23, 2021, the Company’s 2021 Incentive Award Plan (the “2021 Plan”), pursuant to which incentive awards may be awarded to employees, directors and consultants. The Board provided that the maximum number of shares of common stock (subject to stock splits, dividends, recapitalizations and the like) issuable under the 2021 Plan is equal to a number of shares equal to (i) 11.0% of the shares of common stock outstanding immediately prior to the effectiveness of its IPO after giving effect to the number of shares being sold in its IPO (including shares subject to outstanding equity awards, and the 2021 share reserve and the ESPP share reserve (as described above)) and assuming no exercise of the underwriters’ option to purchase additional shares, plus (ii) an annual increase on the first day of each year beginning in 2022 and ending in 2031, equal to the lesser of: (a) 5.0% of the shares outstanding on the last day of the prior fiscal year or (b) such lesser amount as determined by the Board, plus (iii) any shares underlying awards outstanding under the 2011 Long-Term Incentive Plan, as amended (the “2011 Plan”), as of immediately prior to the effectiveness of its IPO, that are thereafter forfeited, terminated, expired or repurchased for the original purchase price thereof, subject to certain statutory limits related to “incentive stock options” within the meaning of Section 422 of the Internal Revenue Code. The Company reserved 12,131,846 shares of common stock for issuance pursuant to future awards under the 2021 Plan. Stock Options During the nine months ended September 30, 2021, the Company granted an aggregate of 2,811,098 stock options to purchase shares of its common stock to officers and employees pursuant to the 2011 Plan and 2021 Plan, with a weighted average exercise price of $19.92 per share. The fair value of options granted was estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions (i) expected term of 6.03 years, (ii) expected volatility of 36.9%, (iii) risk-free interest rate 0.7% and (iv) expected dividend yield of 0%. Restricted Stock Units In the nine months ended September 30, 2021, the Company granted an aggregate of 467,351 RSUs to officers and employees pursuant to the 2021 Plan. The RSUs vest and settle upon the satisfaction of a service condition. The service condition for the awards is satisfied over generally three Employee Stock Purchase Plan The first offering period commenced on May 15, 2021, and as of September 30, 2021, no shares had yet been issued under the plan. Stock-based compensation expense was included as follows: Three months ended September 30, Nine months ended September 30, (in thousands) 2021 2020 2021 2020 Cost of revenues $ 544 $ 84 $ 1,242 $ 264 Research and development 793 97 1,795 303 Sales and marketing 266 35 609 101 General and administrative 1,748 223 4,147 680 Total stock-based compensation expenses $ 3,351 $ 439 $ 7,793 $ 1,348 The amount of stock-based compensation capitalized as part of deferred implementation costs was insignificant for the three and nine months ended September 30, 2021 and September 30, 2020. Due to net operating losses, there was no tax expense or benefit recorded in connection with stock-based compensation expense.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe provision for income taxes in the accompanying condensed consolidated statements of operations for the three and nine months ended September 30, 2021 and 2020 was $0. The effective tax rate differs from the statutory tax rate primarily due to the impact of the full valuation allowance against the Company’s deferred tax assets.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per ShareNet loss attributable to common stockholders used in computing basic and diluted earnings per share (“EPS”) has been calculated as the net loss less Series B cumulative dividends and other adjustments to redeemable convertible preferred stock of $0.3 million for the nine months ended September 30, 2021 and $4.5 million and $5.0 million for the three and nine months ended September 30, 2020, respectively. The holders of the Company’s redeemable convertible preferred stock did not have a contractual obligation to share in the Company’s losses; therefore, no amount of total undistributed loss was allocated to redeemable convertible preferred stock. Upon the consummation of its IPO, all preferred stock converted to common stock, and therefore the Company had no issued or outstanding preferred stock as of September 30, 2021. Basic net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding for the period. Because the Company has reported a net loss for the three and nine months ended September 30, 2021 and 2020, the number of shares used to calculate diluted net loss per share attributable to common stockholders is the same as the number of shares used to calculate basic net loss per share attributable to common stockholders for the period presented because the potentially dilutive shares would have been antidilutive if included in the calculation. The computation of basic and diluted EPS is as follows for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (In thousands, except shares and per share amounts) 2021 2020 2021 2020 Net loss $ (11,219) $ (21,347) $ (33,473) $ (38,869) Less: cumulative dividends and adjustments to redeemable convertible preferred stock — (4,459) (277) (5,013) Net loss attributable to common stockholders $ (11,219) $ (25,806) $ (33,750) $ (43,882) Weighted average shares of common stock outstanding - basic and diluted 87,641,416 4,833,079 56,320,288 4,679,933 Loss per common share - basic and diluted $ (0.13) $ (5.34) $ (0.60) $ (9.38) For the three and nine months ended September 30, 2021 and 2020, the following potential shares of common stock were excluded from diluted EPS as the Company had a net loss in each period presented: As of September 30, 2021 2020 Stock options 10,015,930 12,366,781 Redeemable convertible preferred stock — 72,225,916 Warrants — 212,408 Restricted stock units (RSUs) 467,351 — Total anti-dilutive common share equivalents 10,483,281 84,805,105

Commitment and Contingencies

Commitment and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Lease Commitments The Company leases office space under non-cancelable operating leases for its corporate headquarters in Plano, Texas pursuant to a ten-year lease agreement under which the Company leases approximately 125,000 square feet of office space with an initial term that expires on August 31, 2028, with the option to extend the lease for either two additional terms of five years each or one additional term of ten years. Rent expense under operating leases was $1.2 million and $3.5 million for the three and nine months ended September 30, 2021, respectively, and $1.2 million and $3.4 million for the three and nine months ended September 30, 2020, respectively. Future minimum payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year at September 30, 2021 were as follows (in thousands): Operating Leases 2021 $ 920 2022 3,710 2023 3,773 2024 3,835 2025 3,898 Thereafter 10,697 Total minimum lease payments $ 26,833 Deferred Rent and Tenant Allowances Deferred rent and tenant allowances are amortized and applied against rental expense over the lease term on a straight-line basis. As of September 30, 2021 and December 31, 2020, the Company had deferred rent and tenant allowance balances as follows: (in thousands) September 30, 2021 December 31, 2020 Deferred rent and tenant allowance $ 6,066 $ 6,463 Less: current portion (691) (596) Deferred rent and tenant allowance, net of current portion $ 5,375 $ 5,867 Legal Proceedings The Company may become party to various legal actions during the ordinary course of business. Defending such proceedings is costly and can impose a significant burden on management and employees, it may receive unfavorable preliminary or interim rulings in the course of litigation, and there can be no assurances that favorable final outcomes will be obtained. In addition, the Company’s industry is characterized by the existence of a large number of patents, copyrights, trademarks, trade secrets and other intellectual property and proprietary rights. Companies in its industry are often required to defend against litigation claims based on allegations of infringement or other violations of intellectual property rights. Furthermore, client agreements typically require the Company to indemnify clients against liabilities incurred in connection with claims alleging its solutions infringe the intellectual property rights of a third party. From time to time, the Company has been involved in disputes related to patent and other intellectual property rights of third parties, none of which has resulted in material liabilities. The Company expects these types of disputes may continue to arise in the future. Based upon present information, the Company believes that its liability, if any, arising from such pending legal proceedings, asserted legal claims and known potential legal claims which are likely to be asserted, is not reasonably likely to be material to the Company’s financial position, results of operations, or cash flows, taking into account established accruals for estimated liabilities.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions CU Cooperative Systems, Inc. (“CU Cooperative”), a stockholder of the Company who is also a vendor, was paid fees of $1.3 million and $3.4 million, for the three and nine months ended September 30, 2021, respectively, and $1.0 million and $3.7 million for the three and nine months ended September 30, 2020, respectively, which relate to services resold to the Company’s clients. As of September 30, 2021, the Company had no payable balance due to CU Cooperative, and as of December 31, 2020, accounts payable included amounts due to CU Cooperative of $0.3 million. Mr. Todd Clark, who has served as President and Chief Executive Officer of CU Cooperative since 2016, is a member of the Board and was designated to serve as a member of the Board by CU Cooperative. CU Cooperative held 5% or more of the Company’s capital stock as of December 31, 2020.For the three and nine months ended September 30, 2021, the Company employed a former owner of the acquired business ACH Alert. For certain operating and lease payments made on the former owner’s behalf and lockbox cash receipts due to the Company, a receivable of $1.4 million from the former owner was included in prepaid expenses and other current assets as of December 31, 2020. The Company had no significant receivable balance from the former owner as of September 30, 2021.

Goodwill and Other Intangibles

Goodwill and Other Intangibles	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	Goodwill and Other Intangibles Goodwill and intangible assets deemed to have an indefinite life are not amortized, but are reviewed annually for impairment of value or when indicators of a potential impairment are present. As part of the Company’s business planning cycle, the Company will perform an annual goodwill impairment test in the fourth quarter of the fiscal year beginning in 2021. There were no indications of impairment of goodwill noted for the three months ended September 30, 2021. Goodwill had a carrying value of $48.4 million and $16.2 million as of September 30, 2021 and December 31, 2020, respectively. The Company recorded $31.8 million to goodwill during the three and nine months ended September 30, 2021 due to the purchase of MK and recorded $0.3 million during the nine months ended September 30, 2021 due to a change in the purchase price allocation for ACH Alert as is appropriate during the measurement period. See Note 3 for additional information. Total intangibles, net, consisted of the following as of September 30, 2021 and December 31, 2020: As of September 30, 2021 (In thousands) Carrying Value Accumulated Amortization Net Carrying Value Finite-lived: Customer Relationships $ 5,270 $ (340) $ 4,930 Developed Technology 6,800 (471) 6,329 Tradenames 50 (25) 25 Subtotal amortizable intangible assets 12,120 (836) 11,284 Website domain name 25 — 25 Total intangible assets $ 12,145 $ (836) $ 11,309 As of December 31, 2020 (In thousands) Carrying Value Accumulated Amortization Net Carrying Value Finite-lived: Customer Relationships $ 5,100 $ (85) $ 5,015 Developed Technology 3,300 (118) 3,182 Tradenames 50 (6) 44 Subtotal amortizable intangible assets 8,450 (209) 8,241 Website domain name 25 — 25 Total intangible assets $ 8,475 $ (209) $ 8,266 Amortization expense recognized on intangible assets was $0.2 million and $0.6 million for the three and nine months ended September 30, 2021, respectively. The Company did not recognize amortization expense related to intangible assets for the three and nine months ended September 30, 2020. The following table shows the estimated annual amortization expense of the definite-lived intangible assets for the next five years and thereafter (in thousands): 2021 $ 426 2022 1,542 2023 1,523 2024 1,523 2025 1,523 Thereafter 4,747 $ 11,284

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On November 3, 2021, the Board of Directors of the Company (“Board”), appointed Alex Shootman as Chief Executive Officer of the Company, effective November 5, 2021, replacing Michael Hansen who will remain with the Company as Advisor to the Board, effective November 5, 2021, and will continue to serve on the Board. The Company entered into an employment agreement with Mr. Shootman. Under the employment agreement, Mr. Shootman will serve as Chief Executive Officer of the Company and a member of the Board. Mr. Shootman is also entitled to be granted 1,000,000 restricted stock units that vest as to 25% of the restricted stock units on December 8, 2022 and in equal quarterly installments over three years thereafter. In connection with Mr. Hansen’s departure, the Company entered into a transition and separation agreement with Mr. Hansen. Under the transition and separation agreement, Mr. Hansen will transition to the role of Advisor to the Board and remain employed by the Company through December 17, 2021. The transition and separation agreement also provides that Mr. Hansen will serve as a member of the Board through December 31, 2022. Mr. Hansen’s sole compensation while serving on the Board will be in the continued vesting of his outstanding equity awards. In the event Mr. Hansen continues to serve on the Board through December 31, 2022, the vesting of all of his outstanding equity awards will be accelerated as of that date. Mr. Hansen will have one year after the end of his Board service date to exercise any vested options. The Company is evaluating the accounting for the modification of Mr. Hansen’s unvested equity awards and the Company expects the acceleration of vesting to be significant to its consolidated financial statements.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation The interim unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. All intercompany accounts and transactions are eliminated. In the Company's opinion, the accompanying interim unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting of normal, recurring adjustments, necessary to present fairly the financial position, results of operations and cash flows for the periods indicated. Certain information and disclosures normally included in the notes to the annual consolidated financial statements prepared in accordance with GAAP have been omitted from these interim unaudited condensed consolidated financial statements pursuant to the rules and regulations of the SEC. Accordingly, these interim unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the accompanying notes for the fiscal year ended December 31, 2020, which are included in the final prospectus (the “Prospectus”) for the Company’s IPO filed with the SEC on April 15, 2021 pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended. Operating results for the three and nine months ended September 30, 2021 are not necessarily indicative of results that may be expected for any other interim period or for the year ending December 31, 2021. The Company has no sources of other comprehensive income, and accordingly, net loss presented each period is the same as comprehensive loss.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates and assumptions include determining the timing and amount of revenue recognition, recoverability and amortization period related to costs to obtain and fulfill contracts, and valuation of the Company’s stock options.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company’s financial instruments consist primarily of cash, restricted cash and cash equivalents, accounts receivable, accounts payable, long-term debt, stock warrants and contingent consideration. The carrying values of cash, restricted cash and cash equivalents, accounts receivable, and accounts payable approximate their respective fair values due to the short-term nature of these instruments. The carrying value of long-term debt approximates its fair value due to the variable interest rate. Cash equivalents include amounts held in money market accounts that are measured at fair value using observable market prices. Warrant liabilities are valued using the Black-Scholes option pricing method and are presented at estimated fair value at the end of the reporting period. The assumptions used in preparing the Black-Scholes option pricing calculation include weighted average grant date fair value, volatility, risk-free interest rate, dividends, and weighted average expected life in years. Changes in the fair value of warrant liabilities are recognized as a gain or loss within non-operating income (expense). In connection with the Company’s IPO, warrants converted from a liability instrument to an equity instrument resulting in a reduction of the warrant liability to $0. The Company values contingent consideration related to business combinations using a weighted probability calculation of potential payment scenarios discounted at rates reflective of the risks associated with the expected future cash flows. The Company uses a three-tier fair value hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value: Level 1. Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2. Significant other inputs that are directly or indirectly observable in the marketplace. Level 3. Significant unobservable inputs which are supported by little or no market activity.
Cash and Cash Equivalents and Restricted Cash	Restricted Cash The Company defines restricted cash as cash that is legally restricted as to withdrawal or usage. The amounts included in restricted cash on the condensed consolidated balance sheets at September 30, 2021 and December 31, 2020 represent the additional cash proceeds in deposit with an escrow agent for satisfaction of contingent consideration related to the acquisition of ACH Alert, LLC (“ACH Alert”). In addition, restricted cash representing additional cash proceeds in deposit with an escrow agent for satisfaction of a holdback provision related to the acquisition of MK Decisioning Systems, LLC (“MK”) is included in the condensed consolidated balance sheets at September 30, 2021.
Capitalized Software Development Costs	Capitalized Software Development Costs Software development costs relate primarily to software coding, systems interfaces, and testing of the Company’s proprietary systems and are accounted for in accordance with ASC 350-40, Internal Use Software. Internal software development costs are capitalized from the time the internal use software is in the application development stage until the software is ready for use. Business analysis, system evaluation, and software maintenance costs are expensed as incurred. The capitalized software development costs are reported in property and equipment, net in the condensed consolidated balance sheets. The Company had $1.3 million in capitalized internal software development costs as of September 30, 2021 and none as of December 31, 2020. Capitalized software development costs are amortized using the straight-line method over the estimated useful life of the software, generally three
Contract Balances	Contract Balances Client contracts under which revenues have been recognized while the Company is not yet able to invoice results in contract assets. Generally, contract assets arise as a result of reallocating revenues when discounts are weighted more heavily in the early years of a multi-year contract or the client contract has substantive minimum fees that escalate over the term of the contract. Contract assets totaled $0.8 million and $0.8 million as of September 30, 2021 and December 31, 2020, respectively, which are included in other assets in the accompanying condensed consolidated balance sheets. Contract liabilities are comprised of billings or payments received from the Company’s clients in advance of performance under the contract and are represented in deferred revenues in the condensed consolidated balance sheets.
Stock-Based Compensation	Stock-Based Compensation Stock Options Stock options are accounted for using the grant date fair value method. Under this method, stock-based compensation expense is measured by the estimated fair value of the granted stock options at the date of grant using the Black-Scholes option pricing model and recognized over the vesting period with a corresponding increase to additional paid-in capital. Determining the fair value of stock-based awards at the grant date requires significant judgement. The determination of the grant date fair value of stock-based awards using the Black-Scholes option-pricing model is affected, for periods prior to the Company’s IPO, by the Company’s estimated common stock fair value as well as other subjective assumptions including the volatility, risk-free interest rate, dividends, and weighted average expected life. The assumptions used in the Company’s option-pricing model represent management’s best estimates. These assumptions and estimates are as follows: Fair Value of Common Stock. Given the absence of an active market for the Company’s shares of common stock prior to its IPO, the fair value of the shares of common stock underlying the Company’s stock options was determined by the Company’s board of directors (the “Board”). • Preliminary Offering Price and Options Granted Subsequent to December 31, 2020. During February 2021, the Company granted stock options to purchase shares of its common stock. The Company established the fair value of these grants based on a straight-line interpolation from its December 31, 2020 valuation and the mid-point of its initial price range in order to determine the appropriate stock-based compensation expense for financial reporting purposes. • Initial Public Offering Price and Options Granted Subsequent to April 13, 2021 . The Company’s stock became actively traded upon the completion of its IPO in April 2021. For grants issued upon or subsequent to its IPO the Company establishes fair value based on the Company’s stock price. Volatility: As the Company does not have the necessary trading history for its common stock the selected volatility used is representative of expected future volatility. The Company bases expected future volatility on the historical and implied volatility of comparable publicly traded companies over a similar expected term. Risk-Free Interest Rate: The Company bases the risk-free interest rate on the rate for a U.S. Treasury zero-coupon issue with a term that closely approximates the expected life of the option grant at the date nearest the option grant date. Dividends. The Company has never declared or paid any cash dividends and does not presently intend to pay cash dividends in the foreseeable future, other than the aggregate accumulated dividends paid to holders of the Company’s Series B redeemable convertible preferred stock upon the effectiveness of the Company’s IPO. As a result, the Company used a dividends assumption of zero. Weighted Average Expected Life in Years: The expected term of employee stock options reflects the period for which the Company believes the option will remain outstanding. To determine the expected term, the Company applies the simplified approach in which the expected term of an award is presumed to be the mid-point between the vesting date and the expiration date of the award. In addition to assumptions used in the Black-Scholes option-pricing model, the Company estimates a forfeiture rate to calculate the stock-based compensation expense for its option awards. The Company’s forfeiture rate is based on an analysis of its actual forfeitures. The Company will continue to evaluate the appropriateness of the forfeiture rate based on actual forfeiture experience, analysis of employee turnover and other factors. Restricted Stock Units Restricted stock units (“RSUs”) issued upon and subsequent to the Company’s IPO vest upon the satisfaction of a time-based condition only. These RSUs are generally earned over a service period of three Employee Stock Purchase Plan The Company’s 2021 Employee Stock Purchase Plan (the “ESPP”) permits employees to purchase the Company's common stock through payroll deductions during six month offerings. The offering periods begin each May 16 and November 16, or such other period determined by the compensation committee. In accordance with the guidance in ASC 718-50 - Compensation - Stock Compensation, the ability to purchase shares of the Company’s common stock for 85% of the lower of the price on the first day of the offering period or the last day of the offering period (i.e. the purchase date) represents an option and, therefore, the ESPP is a compensatory plan. Accordingly, stock-based compensation expense is determined based on the grant-date fair value as estimated by applying the Black-Scholes option-pricing model and is recognized over the withholding period.
Concentrations of Credit Risk	Concentrations of Credit RiskSignificant concentrations of credit risk arise from the Company’s revenues and accounts receivable. Management believes that its contract acceptance, billing, and collection policies are adequate to minimize potential credit risk. No client represented more than 10% of revenue for the three and nine months ended September 30, 2021 and 2020. As of September 30, 2021 and December 31, 2020, no client represented more than 10% of accounts receivable.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “Leases (Topic 842),” to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the condensed consolidated balance sheets and disclosing key information about leasing arrangements. The Company anticipates that the adoption of Topic 842 will impact its condensed consolidated balance sheets as most of its operating lease commitments will be subject to the new standard and recognized as right-of-use assets and corresponding operating lease liabilities upon the adoption of ASU 2016-02. The Company expects to adopt the standard in fiscal year 2021 using the modified retrospective transition approach and interim periods beginning 2022. The Company continues to evaluate quantitative impacts that the adoption of this standard will have. The Company expects total assets and liabilities reported will increase relative to such amounts prior to adoption. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments—Credit Losses (Topic 326),” which modifies the measurement of expected credit losses of certain financial instruments with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The effective date for adoption of the new standard was delayed until calendar years beginning after December 15, 2021, with early adoption permitted. The Company expects to adopt this new standard in interim periods beginning in 2022. This ASU is not expected to have a material impact on the Company’s financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table summarizes the Company’s financial assets measured at fair value as of September 30, 2021 and December 31, 2020 and indicates the fair value hierarchy of the valuation: Fair Value at Reporting Date Using (In thousands) September 30, 2021 Level 1 Level 2 Level 3 Assets: Money Market Accounts $ 14,647 $ 14,647 $ — $ — Total Assets $ 14,647 $ 14,647 $ — $ — Liabilities: Contingent consideration payable $ (15,500) $ — $ — $ (15,500) Total Liabilities $ (15,500) $ — $ — $ (15,500) Fair Value at Reporting Date Using (In thousands) December 31, 2020 Level 1 Level 2 Level 3 Assets: Money Market Accounts $ 143,277 $ 143,277 $ — $ — Total Assets $ 143,277 $ 143,277 $ — $ — Liabilities: Warrant Liabilities $ (2,692) $ — $ — $ (2,692) Total Liabilities $ (2,692) $ — $ — $ (2,692)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The reconciliations of the beginning and ending balances during the nine months ended September 30, 2021 for Level 3 assets and liabilities are as follows (in thousands): Asset and liability categories Beginning Level 3 Fair Value at January 1, 2021 Fair value adjustment Adjustment for conversion to equity accounting treatment upon IPO Ending Level 3 Fair Value at September 30, 2021 Warrant Liabilities $ (2,692) $ (3,035) $ 5,727 $ — The following table represents the changes to the Company’s contingent consideration payable (in thousands): Balance at January 1, 2021 $ — Business Combination 15,500 Balance at September 30, 2021 $ 15,500
Schedule of Cash and Cash Equivalents	September 30, December 31, (in thousands) 2021 2020 Cash and cash equivalents $ 314,402 $ 166,790 Restricted cash included in Prepaid expenses and other current assets 3,500 — Restricted cash included in Other assets 3,374 4,873 Total cash and cash equivalents and restricted cash $ 321,276 $ 171,663
Restrictions on Cash and Cash Equivalents	September 30, December 31, (in thousands) 2021 2020 Cash and cash equivalents $ 314,402 $ 166,790 Restricted cash included in Prepaid expenses and other current assets 3,500 — Restricted cash included in Other assets 3,374 4,873 Total cash and cash equivalents and restricted cash $ 321,276 $ 171,663

Business Combination (Tables)

Business Combination (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The Company’s preliminary fair value estimates and assumptions to measure the assets acquired and liabilities assumed were subject to change as the Company obtained additional information during the measurement period. The following table summarizes the fair value amounts recognized as of the acquisition date for each major class of asset acquired or liability assumed, as well as adjustments made during the measurement period: (in thousands) Preliminary Fair Value as of October 4, 2020 Measurement Period Adjustments Adjusted Fair Value as of March 31, 2021 Trade accounts receivables $ 915 $ — $ 915 Other current assets 47 (14) 33 Property and equipment 20 — 20 Goodwill 16,218 324 16,542 Intangible assets 8,450 — 8,450 Total assets acquired $ 25,650 $ 310 $ 25,960 Accounts payable $ 61 $ 5 $ 66 Accrued liabilities — 4 4 Deferred revenues, current 170 — 170 Deferred revenues, net of current 346 (25) 321 Total liabilities assumed 577 (16) 561 Net assets acquired $ 25,073 $ 326 $ 25,399 (in thousands) Preliminary Fair Value as of September 10, 2021 Trade accounts receivables $ 437 Other current assets 56 Property and equipment 41 Goodwill 31,849 Intangible assets 3,670 Total assets acquired $ 36,053 Accounts payable and accrued liabilities $ 43 Deferred revenues, net of current 510 Total liabilities assumed 553 Net assets acquired $ 35,500
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The table below outlines the purchased identifiable intangible assets: Weighted Average Amortization Period Total (in years) (in thousands) Customer relationships 15 $ 5,100 Developed technology 7 3,300 Trade names 2 50 Total identifiable intangible assets $ 8,450 The table below outlines the purchased identifiable intangible assets: Weighted Average Amortization Period Total (in years) (in thousands) Customer relationships 15 $ 170 Developed technology 5 3,500 Total identifiable intangible assets $ 3,670

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	(in thousands) Useful Life September 30, 2021 December 31, 2020 Software 1 to 3 years $ 1,997 $ 722 Computers and equipment 3 years 4,647 3,821 Furniture and fixtures 5 years 3,977 3,930 Leasehold improvements 3 to 10 years 11,677 11,650 $ 22,298 $ 20,123 Less: accumulated depreciation (11,407) (9,662) Property and equipment, net $ 10,891 $ 10,461

Revenue and Deferred Costs (Tab

Revenue and Deferred Costs (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table disaggregates the Company's revenue by major source for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (in thousands) 2021 2020 2021 2020 SaaS subscription services $ 37,486 $ 27,065 $ 103,582 $ 73,723 Implementation services 1,591 1,419 4,604 3,741 Other services 684 457 1,538 1,353 Total revenues $ 39,761 $ 28,941 $ 109,724 $ 78,817

Accounts Receivable (Tables)

Accounts Receivable (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Schedule of Accounts Receivable, Net	Accounts receivable includes the following amounts at September 30, 2021 and December 31, 2020: September 30, December 31, (in thousands) 2021 2020 Trade accounts receivable $ 15,507 $ 11,804 Unbilled receivables 3,776 2,081 Other receivables 1,211 702 Total receivables 20,494 14,587 Allowance for doubtful accounts (57) (323) Reserve for estimated credits (156) (161) $ 20,281 $ 14,103

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities consisted of the following at September 30, 2021 and December 31, 2020: September 30, December 31, (in thousands) 2021 2020 Bonus accrual $ 6,804 $ 2,636 Accrued vendor purchases 1,950 2,542 Commissions accrual 1,118 1,309 Accrued hosting services 1,249 924 Client refund liability 1,106 1,362 Deferred compensation payable 2,500 625 Accrued consulting and professional fees 875 207 Accrued tax liabilities 2,947 2,394 Other accrued liabilities 6,183 1,100 Total accrued liabilities $ 24,732 $ 13,099

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table summarizes long-term debt obligations as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Term Debt $ 25,000 $ 25,000 Less unamortized debt issuance costs (82) (121) Net amount 24,918 24,879 Less current maturities of long-term debt (1,250) (313) Long-term portion $ 23,668 $ 24,566
Schedule of Maturities of Long-term Debt	Maturities of long-term debt outstanding as of September 30, 2021, are summarized as follows (in thousands): 2021 $ 313 2022 1,562 2023 23,125 Thereafter — Total $ 25,000

Equity Compensation (Tables)

Equity Compensation (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Expensed and Capitalized, Amount	Stock-based compensation expense was included as follows: Three months ended September 30, Nine months ended September 30, (in thousands) 2021 2020 2021 2020 Cost of revenues $ 544 $ 84 $ 1,242 $ 264 Research and development 793 97 1,795 303 Sales and marketing 266 35 609 101 General and administrative 1,748 223 4,147 680 Total stock-based compensation expenses $ 3,351 $ 439 $ 7,793 $ 1,348 The amount of stock-based compensation capitalized as part of deferred implementation costs was insignificant for the three and nine months ended September 30, 2021 and September 30, 2020. Due to net operating losses, there was no tax expense or benefit recorded in connection with stock-based compensation expense.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The computation of basic and diluted EPS is as follows for the three and nine months ended September 30, 2021 and 2020: Three months ended September 30, Nine months ended September 30, (In thousands, except shares and per share amounts) 2021 2020 2021 2020 Net loss $ (11,219) $ (21,347) $ (33,473) $ (38,869) Less: cumulative dividends and adjustments to redeemable convertible preferred stock — (4,459) (277) (5,013) Net loss attributable to common stockholders $ (11,219) $ (25,806) $ (33,750) $ (43,882) Weighted average shares of common stock outstanding - basic and diluted 87,641,416 4,833,079 56,320,288 4,679,933 Loss per common share - basic and diluted $ (0.13) $ (5.34) $ (0.60) $ (9.38)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	For the three and nine months ended September 30, 2021 and 2020, the following potential shares of common stock were excluded from diluted EPS as the Company had a net loss in each period presented: As of September 30, 2021 2020 Stock options 10,015,930 12,366,781 Redeemable convertible preferred stock — 72,225,916 Warrants — 212,408 Restricted stock units (RSUs) 467,351 — Total anti-dilutive common share equivalents 10,483,281 84,805,105

Commitment and Contingencies (T

Commitment and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year at September 30, 2021 were as follows (in thousands): Operating Leases 2021 $ 920 2022 3,710 2023 3,773 2024 3,835 2025 3,898 Thereafter 10,697 Total minimum lease payments $ 26,833
Schedule of Rent Expense	As of September 30, 2021 and December 31, 2020, the Company had deferred rent and tenant allowance balances as follows: (in thousands) September 30, 2021 December 31, 2020 Deferred rent and tenant allowance $ 6,066 $ 6,463 Less: current portion (691) (596) Deferred rent and tenant allowance, net of current portion $ 5,375 $ 5,867

Goodwill and Other Intangibles

Goodwill and Other Intangibles (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	Total intangibles, net, consisted of the following as of September 30, 2021 and December 31, 2020: As of September 30, 2021 (In thousands) Carrying Value Accumulated Amortization Net Carrying Value Finite-lived: Customer Relationships $ 5,270 $ (340) $ 4,930 Developed Technology 6,800 (471) 6,329 Tradenames 50 (25) 25 Subtotal amortizable intangible assets 12,120 (836) 11,284 Website domain name 25 — 25 Total intangible assets $ 12,145 $ (836) $ 11,309 As of December 31, 2020 (In thousands) Carrying Value Accumulated Amortization Net Carrying Value Finite-lived: Customer Relationships $ 5,100 $ (85) $ 5,015 Developed Technology 3,300 (118) 3,182 Tradenames 50 (6) 44 Subtotal amortizable intangible assets 8,450 (209) 8,241 Website domain name 25 — 25 Total intangible assets $ 8,475 $ (209) $ 8,266
Schedule of Indefinite-Lived Intangible Assets	Total intangibles, net, consisted of the following as of September 30, 2021 and December 31, 2020: As of September 30, 2021 (In thousands) Carrying Value Accumulated Amortization Net Carrying Value Finite-lived: Customer Relationships $ 5,270 $ (340) $ 4,930 Developed Technology 6,800 (471) 6,329 Tradenames 50 (25) 25 Subtotal amortizable intangible assets 12,120 (836) 11,284 Website domain name 25 — 25 Total intangible assets $ 12,145 $ (836) $ 11,309 As of December 31, 2020 (In thousands) Carrying Value Accumulated Amortization Net Carrying Value Finite-lived: Customer Relationships $ 5,100 $ (85) $ 5,015 Developed Technology 3,300 (118) 3,182 Tradenames 50 (6) 44 Subtotal amortizable intangible assets 8,450 (209) 8,241 Website domain name 25 — 25 Total intangible assets $ 8,475 $ (209) $ 8,266
Schedule of Definite-Lived Intangible Assets, Future Amortization Expense	The following table shows the estimated annual amortization expense of the definite-lived intangible assets for the next five years and thereafter (in thousands): 2021 $ 426 2022 1,542 2023 1,523 2024 1,523 2025 1,523 Thereafter 4,747 $ 11,284

Organization (Details)

Organization (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 13, 2021	Apr. 12, 2021	Sep. 30, 2021	Dec. 31, 2020
Subsidiary, Sale of Stock [Line Items]
Common stock, shares authorized			500,000,000	101,671,156
Redeemable convertible preferred stock, authorized (in shares)			0	72,799,602
Preferred stock converted into common stock (in shares)		72,225,916
Payment of accumulated dividends		$ 5
Number of shares converted from warrants (in shares)		212,408
IPO
Subsidiary, Sale of Stock [Line Items]
Shares sold in offering	6,900,000
Public offering price per share (in dollars per share)	$ 30
Public offering, aggregate cash proceeds	$ 192.8
Common stock, shares authorized	500,000,000
Redeemable convertible preferred stock, authorized (in shares)	10,000,000
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Shares sold in offering	900,000

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Apr. 13, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant liability	$ 0	$ 0	$ 2,692,000
Capitalized internal software development costs	1,300,000		0
Contract assets	$ 800,000		$ 800,000
Minimum | Restricted stock units (RSUs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Award requisite service period	3 years
Minimum | Software Development Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Useful life (in years)	3 years
Maximum | Restricted stock units (RSUs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Award requisite service period	4 years
Maximum | Software Development Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Useful life (in years)	5 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Fair Value of Assets and Liabilities Measured At Fair Value (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Apr. 13, 2021	Dec. 31, 2020
Liabilities:
Contingent consideration payable	$ 15,500,000		$ 0
Warrant liability	0	$ 0	(2,692,000)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Business Combination	15,500,000
Ending balance	15,500,000
Fair Value, Recurring
Assets:
Total Assets	14,647,000		143,277,000
Liabilities:
Contingent consideration payable	(15,500,000)
Warrant liability			(2,692,000)
Total Liabilities	(15,500,000)		2,692,000
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Ending balance	(15,500,000)
Fair Value, Recurring | Money Market Accounts
Assets:
Money Market Accounts	14,647,000		143,277,000
Fair Value, Recurring | Level 1
Assets:
Total Assets	14,647,000		143,277,000
Liabilities:
Contingent consideration payable	0
Warrant liability			0
Total Liabilities	0		0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Ending balance	0
Fair Value, Recurring | Level 1 | Money Market Accounts
Assets:
Money Market Accounts	14,647,000		143,277,000
Fair Value, Recurring | Level 2
Assets:
Total Assets	0		0
Liabilities:
Contingent consideration payable	0
Warrant liability			0
Total Liabilities	0		0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Ending balance	0
Fair Value, Recurring | Level 2 | Money Market Accounts
Assets:
Money Market Accounts	0		0
Fair Value, Recurring | Level 3
Assets:
Total Assets	0		0
Liabilities:
Contingent consideration payable	(15,500,000)
Warrant liability	0		(2,692,000)
Total Liabilities	(15,500,000)		2,692,000
Warrant liabilities, fair value adjustment	(3,035,000)
Warrant liabilities, adjustment for conversion to equity accounting treatment upon IPO	5,727,000
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Ending balance	(15,500,000)
Fair Value, Recurring | Level 3 | Money Market Accounts
Assets:
Money Market Accounts	$ 0		$ 0

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Reconciliation of Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Cash and cash equivalents	$ 314,402	$ 166,790
Restricted cash included in Prepaid expenses and other current assets	3,500	0
Restricted cash included in Other assets	3,374	4,873
Total cash and cash equivalents and restricted cash	$ 321,276	$ 171,663	$ 205,652	$ 11,982

Business Combination - Narrativ

Business Combination - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	Sep. 10, 2021	Oct. 16, 2020	Oct. 04, 2020	Sep. 30, 2021	Sep. 30, 2021
Term Loan | Line of Credit
Business Acquisition [Line Items]
Proceeds from issuance of long-term debt		$ 25
ACH Alert
Business Acquisition [Line Items]
Cash consideration paid			$ 25
Contingent consideration			4.9
Contingent consideration to be paid in 2021			2.5
Contingent consideration to be paid in 2022			$ 2.4
Compensation expense				$ 0.6	$ 1.9
MK
Business Acquisition [Line Items]
Cash consideration paid	$ 20
Contingent consideration				15.5	15.5
Holdback provision held in escrow	2
Holdback provision to be released	$ 1
Anniversary period for first escrow release	12 months
Second escrow release period	18 months
Contingent consideration period	170 days
Reference price (in dollars per share)	$ 35
Maximum contingent consideration to be paid (as a percent)	62.00%
Transaction expenses				$ 0.3	0.3
Unpaid contingent consideration					$ 17.5
MK | Maximum | Earn-Out Shares
Business Acquisition [Line Items]
Contingent consideration	$ 20
MK | Maximum | First Earn Out Period
Business Acquisition [Line Items]
Contingent consideration	7.5
MK | Maximum | Second Earn Out Period
Business Acquisition [Line Items]
Contingent consideration	$ 17.5

Business Combination - Schedule

Business Combination - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	6 Months Ended	9 Months Ended
	Mar. 31, 2021	Sep. 30, 2021	Sep. 10, 2021	Dec. 31, 2020	Oct. 04, 2020
Assets
Goodwill		$ 48,391		$ 16,218
ACH Alert
Assets
Trade accounts receivables	$ 915				$ 915
Other current assets	33				47
Measurement Period Adjustments, Other current assets	(14)
Property and equipment	20				20
Goodwill	16,542				16,218
Increase in goodwill during period	324	300
Intangible assets	8,450				8,450
Total assets acquired	25,960				25,650
Measurement Period Adjustments, Total assets acquired	310
Liabilities
Accounts payable	66				61
Measurement Period Adjustments, Accounts payable	5
Accrued liabilities	4				0
Measurement Period Adjustments, Accrued liabilities	4
Deferred revenues, current	170				170
Deferred revenues, net of current	321				346
Measurement Period Adjustments, Deferred revenue, net of current	(25)
Total liabilities assumed	561				577
Measurement Period Adjustments, Total liabilities assumed	(16)
Net assets acquired	25,399				$ 25,073
Measurement Period Adjustments, Net assets acquired	$ 326
MK
Assets
Trade accounts receivables			$ 437
Other current assets			56
Property and equipment			41
Goodwill			31,849
Increase in goodwill during period		$ 31,800
Intangible assets			3,670
Total assets acquired			36,053
Liabilities
Accounts payable			43
Deferred revenues, net of current			510
Total liabilities assumed			553
Net assets acquired			$ 35,500

Business Combination - Schedu_2

Business Combination - Schedule of Purchased Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 10, 2021	Oct. 04, 2020
ACH Alert
Business Acquisition [Line Items]
Total identifiable intangible assets		$ 8,450
ACH Alert | Customer relationships
Business Acquisition [Line Items]
Weighted Average Amortization Period		15 years
Total identifiable intangible assets		$ 5,100
ACH Alert | Developed technology
Business Acquisition [Line Items]
Weighted Average Amortization Period		7 years
Total identifiable intangible assets		$ 3,300
ACH Alert | Trade names
Business Acquisition [Line Items]
Weighted Average Amortization Period		2 years
Total identifiable intangible assets		$ 50
MK
Business Acquisition [Line Items]
Total identifiable intangible assets	$ 3,670
MK | Customer relationships
Business Acquisition [Line Items]
Weighted Average Amortization Period	15 years
Total identifiable intangible assets	$ 170
MK | Developed technology
Business Acquisition [Line Items]
Weighted Average Amortization Period	5 years
Total identifiable intangible assets	$ 3,500

Property and Equipment, Net - N

Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment [Abstract]
Depreciation	$ 0.6	$ 0.7	$ 1.8	$ 2

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 22,298	$ 20,123
Less: accumulated depreciation	(11,407)	(9,662)
Property and equipment, net	10,891	10,461
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,997	722
Software | Minimum
Property, Plant and Equipment [Line Items]
Useful life (in years)	1 year
Software | Maximum
Property, Plant and Equipment [Line Items]
Useful life (in years)	3 years
Computers and equipment
Property, Plant and Equipment [Line Items]
Useful life (in years)	3 years
Property and equipment, gross	$ 4,647	3,821
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life (in years)	5 years
Property and equipment, gross	$ 3,977	3,930
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 11,677	$ 11,650
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life (in years)	3 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life (in years)	10 years

Revenue and Deferred Costs - Di

Revenue and Deferred Costs - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 39,761	$ 28,941	$ 109,724	$ 78,817
SaaS Services
Disaggregation of Revenue [Line Items]
Total revenues	37,486	27,065	103,582	73,723
Implementation services
Disaggregation of Revenue [Line Items]
Total revenues	1,591	1,419	4,604	3,741
Other services
Disaggregation of Revenue [Line Items]
Total revenues	$ 684	$ 457	$ 1,538	$ 1,353

Revenue and Deferred Costs - Na

Revenue and Deferred Costs - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue recognized during period	$ 2,100,000	$ 2,900,000	$ 5,800,000	$ 7,400,000
Remaining performance obligation, amount	553,400,000		553,400,000
Impairment loss on deferred costs	0	0	0	0
Deferred Commissions Costs
Disaggregation of Revenue [Line Items]
Capitalized cost during period	300,000	300,000	800,000	1,100,000
Amortization of capitalized costs	600,000	400,000	1,600,000	1,100,000
Deferred commissions	8,400,000		8,400,000		$ 9,000,000
Deferred Implementation Costs
Disaggregation of Revenue [Line Items]
Capitalized cost during period	1,300,000	1,000,000	4,000,000	3,200,000
Amortization of capitalized costs	$ 700,000	$ 500,000	$ 1,900,000	$ 1,500,000

Revenue and Deferred Costs - Re

Revenue and Deferred Costs - Remaining Performance Obligation (Details)	Sep. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (as a percent)	47.00%
Remaining performance obligation, period	24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (as a percent)	33.60%
Remaining performance obligation, period	24 months

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 20,494	$ 14,587
Allowance for doubtful accounts	(57)	(323)
Reserve for estimated credits	(156)	(161)
Accounts receivable, net	20,281	14,103
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	15,507	11,804
Unbilled receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	3,776	2,081
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 1,211	$ 702

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Bonus accrual	$ 6,804	$ 2,636
Accrued vendor purchases	1,950	2,542
Commissions accrual	1,118	1,309
Accrued hosting services	1,249	924
Client refund liability	1,106	1,362
Deferred compensation payable	2,500	625
Accrued consulting and professional fees	875	207
Accrued tax liabilities	2,947	2,394
Other accrued liabilities	6,183	1,100
Total accrued liabilities	$ 24,732	$ 13,099

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)	Oct. 16, 2020	Sep. 30, 2021
Debt Instrument [Line Items]
Revenue growth requirement (as a percent)	10.00%
Liquidity requirement	$ 10,000,000
Line of Credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Line of Credit | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.00%
Line of Credit | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.50%
Line of Credit | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	200.00%
Line of Credit | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.50%
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 25,000,000
Accordion feature	$ 30,000,000
Line of credit, unused capacity, commitment fee (as a percent)	0.30%
Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 10,000,000
Swingline Loan | Line of Credit
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	7,500,000
Term Loan | Line of Credit
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	25,000,000
Term Loan | Line of Credit | Beginning December 31, 2021
Debt Instrument [Line Items]
Quarterly installment payments	300,000
Term Loan | Line of Credit | Beginning December 31, 2022
Debt Instrument [Line Items]
Quarterly installment payments	$ 600,000
Term Loan | Line of Credit | Minimum
Debt Instrument [Line Items]
Minimum interest rate applied to term debt (as a percent)		4.00%

Debt - Schedule of Long Term De

Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Term Debt	$ 25,000	$ 25,000
Less unamortized debt issuance costs	(82)	(121)
Net amount	24,918	24,879
Current portion of long-term debt	(1,250)	(313)
Long-term portion	$ 23,668	$ 24,566

Debt - Maturities of Long Term

Debt - Maturities of Long Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
2021	$ 313
2022	1,562
2023	23,125
Thereafter	0
Total	$ 25,000	$ 25,000

Redeemable Convertible Prefer_2

Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - Narrative (Details) $ in Thousands	Apr. 12, 2021USD ($)shares	Sep. 30, 2021USD ($)shares	Mar. 31, 2021USD ($)shares	Sep. 30, 2021USD ($)shares	Sep. 30, 2020USD ($)	Apr. 13, 2021shares	Dec. 31, 2020classshares
Class of Stock [Line Items]
Common stock, shares authorized		500,000,000		500,000,000			101,671,156
Redeemable convertible preferred stock, authorized (in shares)		0		0			72,799,602
Number of shares authorized for repurchase			200,000
Common stock repurchased | $			$ 3,500	$ 3,497	$ 0
Number of classes of stock | class							7
Preferred stock converted into common stock (in shares)	72,225,916
Payment of accumulated dividends | $	$ 5,000
Number of shares converted from warrants (in shares)	212,408
Proceeds from stock option exercises | $		$ 600		$ 6,417	$ 241
IPO
Class of Stock [Line Items]
Common stock, shares authorized						500,000,000
Redeemable convertible preferred stock, authorized (in shares)						10,000,000

Equity Compensation - Narrative

Equity Compensation - Narrative (Details) - $ / shares	Feb. 25, 2021	Sep. 30, 2021	Apr. 12, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance			12,131,846
Shares issuable, percent of shares outstanding (as a percent)	11.00%
Shares issuable, percent of shares outstanding on last day of prior fiscal year (as a percent)	5.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount on share repurchase (as a percent)	15.00%
Reserve for future issuance (as a percent)	2.00%
Reserve for future issuance, evergreen provision (as a percent)	1.00%
Shares reserved for future issuance			2,205,790
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)		2,811,098
Weighted average grant date fair value (in dollars per share)		$ 19.92
Expected term		6 years 10 days
Volatility (as a percent)		36.90%
Risk-free interest rate (as a percent)		0.70%
Expected dividend yield (as a percent)		0.00%
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted (in shares)		467,351
Restricted stock units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		3 years
Restricted stock units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		4 years

Equity Compensation - Schedule

Equity Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	$ 3,351	$ 439	$ 7,793	$ 1,348
Cost of revenues
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	544	84	1,242	264
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	793	97	1,795	303
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	266	35	609	101
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expenses	$ 1,748	$ 223	$ 4,147	$ 680

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 0	$ 0	$ 0	$ 0

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Cumulative dividends and adjustments to redeemable convertible preferred stock	$ 0	$ 4,459	$ 277	$ 5,013

Earnings Per Share - Computatio

Earnings Per Share - Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net loss	$ (11,219)	$ (21,347)	$ (33,473)	$ (38,869)
Less: cumulative dividends and adjustments to redeemable convertible preferred stock	0	(4,459)	(277)	(5,013)
Net loss attributable to common stockholders	(11,219)	(25,806)	(33,750)	(43,882)
Net loss attributable to common stockholders	$ (11,219)	$ (25,806)	$ (33,750)	$ (43,882)
Weighted average shares of common stock outstanding - basic (in shares)	87,641,416	4,833,079	56,320,288	4,679,933
Weighted average shares of common stock outstanding - diluted (in shares)	87,641,416	4,833,079	56,320,288	4,679,933
Loss per common share - basic (in dollars per share)	$ (0.13)	$ (5.34)	$ (0.60)	$ (9.38)
Loss per common share - diluted (in dollars per share)	$ (0.13)	$ (5.34)	$ (0.60)	$ (9.38)

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Antidilutive Securities (Details) - shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common share equivalents	10,483,281	84,805,105
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common share equivalents	10,015,930	12,366,781
Redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common share equivalents	0	72,225,916
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common share equivalents	0	212,408
Restricted stock units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common share equivalents	467,351	0

Commitment and Contingencies -

Commitment and Contingencies - Narrative (Details) ft² in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)ft²extension	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)ft²extension	Sep. 30, 2020USD ($)
Operating Leased Assets [Line Items]
Lease term			10 years
Office space (in square foot) | ft²	125		125
Rent expense | $	$ 1.2	$ 1.2	$ 3.5	$ 3.4
Lease Contractual Term One
Operating Leased Assets [Line Items]
Number of additional terms	2		2
Operating lease extension period			5 years
Lease Contractual Term Two
Operating Leased Assets [Line Items]
Number of additional terms	1		1
Operating lease extension period			10 years

Commitment and Contingencies _2

Commitment and Contingencies - Schedule of Lease Maturity (Details) $ in Thousands	Sep. 30, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
2021	$ 920
2022	3,710
2023	3,773
2024	3,835
2025	3,898
Thereafter	10,697
Total minimum lease payments	$ 26,833

Commitment and Contingencies _3

Commitment and Contingencies - Schedule of Deferred Rent and Tenant Allowances (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Deferred rent and tenant allowance	$ 6,066	$ 6,463
Less: current portion	(691)	(596)
Deferred rent and tenant allowance, net of current portion	$ 5,375	$ 5,867

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
CU Cooperative
Related Party Transaction [Line Items]
Fees paid to related parties	$ 1.3	$ 1	$ 3.4	$ 3.7
Due to related party	$ 0		$ 0		$ 0.3
Amount of capital stock held (as a percent)					5.00%
Former owner of ACH Alert
Related Party Transaction [Line Items]
Due from related party					$ 1.4

Goodwill and Other Intangible_2

Goodwill and Other Intangibles - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Sep. 10, 2021	Dec. 31, 2020	Oct. 04, 2020
Business Acquisition [Line Items]
Goodwill	$ 48,391		$ 48,391		$ 16,218
Amortization expense on intangible assets	$ 200		600
MK
Business Acquisition [Line Items]
Goodwill				$ 31,849
Increase in goodwill during period			31,800
ACH Alert
Business Acquisition [Line Items]
Goodwill		$ 16,542				$ 16,218
Increase in goodwill during period		$ 324	$ 300

Goodwill and Other Intangible_3

Goodwill and Other Intangibles - Schedule of Total Intangibles, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Carrying Value	$ 12,120	$ 8,450
Accumulated Amortization	(836)	(209)
Net Carrying Value	11,284	8,241
Website domain name	25	25
Total carrying value, gross	12,145	8,475
Total net carrying value	11,309	8,266
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Carrying Value	5,270	5,100
Accumulated Amortization	(340)	(85)
Net Carrying Value	4,930	5,015
Developed technology
Finite-Lived Intangible Assets [Line Items]
Carrying Value	6,800	3,300
Accumulated Amortization	(471)	(118)
Net Carrying Value	6,329	3,182
Trade names
Finite-Lived Intangible Assets [Line Items]
Carrying Value	50	50
Accumulated Amortization	(25)	(6)
Net Carrying Value	$ 25	$ 44

Goodwill and Other Intangible_4

Goodwill and Other Intangibles - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
2021	$ 426
2022	1,542
2023	1,523
2024	1,523
2025	1,523
Thereafter	4,747
Net Carrying Value	$ 11,284	$ 8,241

Subsequent Events (Details)

Subsequent Events (Details) - Restricted stock units (RSUs) - shares	Nov. 03, 2021	Sep. 30, 2021
Subsequent Event [Line Items]
Restricted stock units granted (in shares)		467,351
Subsequent Event | Chief Executive Officer
Subsequent Event [Line Items]
Restricted stock units granted (in shares)	1,000,000
Award vesting rights (as a percent)	25.00%
Award vesting period	3 years