Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	1. Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation These condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“GAAP”). The condensed consolidated financial statements include the accounts of Upland Software, Inc. and its wholly owned subsidiaries (collectively referred to as “Upland”, the “Company”, “we”, “us” or “our”). All intercompany accounts and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current period presentation. The accompanying unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for interim financial reporting. In the opinion of management of the Company, the unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements, in all material respects, and include all adjustments of a normal recurring nature necessary for a fair presentation. The results of operations for the three and nine months ended September 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022 or for any other period. The financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s 2021 Annual Report on Form 10-K filed with the SEC on February 24, 2022. Use of Estimates The preparation of the accompanying condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenues and expenses. Significant items subject to such estimates include those related to revenue recognition, deferred commissions, allowance for credit losses, stock-based compensation, contingent consideration, acquired intangible assets, impairment of goodwill, intangibles and long-lived assets, the useful lives of intangible assets and property and equipment, the fair value of the Company’s interest rate swaps and income taxes. In accordance with GAAP, management bases its estimates on historical experience and on various other assumptions that management believes are reasonable under the circumstances. Management regularly evaluates its estimates and assumptions using historical experience and other factors; however, actual results could differ from those estimates. We assessed the impact of COVID-19 on the estimates and assumptions and determined there was no material impact. Upland is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of November 3, 2022, the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions. Concentrations of Credit Risk and Significant Customers Financial instruments that potentially subject the Company to credit risk consist of cash and cash equivalents, accounts receivable and the Company’s interest rate swap hedges. The Company’s cash and cash equivalents are placed with high-quality financial institutions, which, at times, may exceed federally insured limits. The Company has not experienced any losses in these accounts, and the Company does not believe it is exposed to any significant credit risk related to cash and cash equivalents. The Company provides credit, in the normal course of business, to a number of its customers. To manage accounts receivable credit risk, the Company performs periodic credit evaluations of its customers and maintains current expected credit losses which considers such factors as historical loss information, geographic location of customers, current market conditions, and reasonable and supportable forecasts. No individual customer represented more than 10% of total revenues for the nine months ended September 30, 2022, or more than 10% of accounts receivable as of September 30, 2022 or December 31, 2021. Derivatives Cash Flow Hedges—Interest Rate Swap Agreements In August 2019 and in connection with borrowing funds under the Company’s credit facility, the Company entered into a floating-to-fixed interest rate swap agreements to limit exposure to interest rate risk related to our debt. These interest rate swaps effectively converted the entire balance of the Company's $540 million original principal term loans from variable interest payments to fixed interest rate payments, based on an annualized fixed rate of 5.4%, for a 7-year term of debt. ASC 815, Derivatives and Hedging, requires entities to recognize derivative instruments as either assets or liabilities in the statement of financial position at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, further, on the type of hedging relationship. The Company assessed the effectiveness of the hedging relationship under the hypothetical derivative method and noted that all of the critical terms of the hypothetical derivative and hedging instrument were the same. The hedging relationship continues to limit the Company’s exposure to the variability in interest rates under the Company’s term loans and related cash outflows. As such, the Company has deemed this hedging relationship as highly effective in offsetting cash flows attributable to hedged risk (variability in forecasted monthly interest payments) for the term of the term loans and interest rate swap agreements. All derivative financial instruments are recorded at fair value as a net asset or liability in the accompanying condensed consolidated balance sheets. As of September 30, 2022, the fair value of the interest rate swaps included in assets in the Company's condensed consolidated balance sheets was $43.9 million. As of December 31, 2021, the fair value of the interest rate swaps included in liabilities in the Company's condensed consolidated balance sheets was $8.4 million. The interest rate swap has been designated as a cash flow hedge. As such, the change in the fair value of the hedging instruments is recorded in Other comprehensive income (loss) in the accompanying condensed consolidated statements of comprehensive income (loss). Amounts deferred in Other comprehensive income (loss) will be reclassified to Interest expense in the accompanying condensed consolidated statements of operations in the period in which the hedged item affects earnings. Fair Value of Financial Instruments The Company recognizes financial instruments in accordance with the authoritative guidance on fair value measurements and disclosures for financial assets and liabilities. This guidance defines fair value, establishes a framework for measuring fair value in accordance with GAAP, and expands disclosures about fair value measurements. The guidance also establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include Level 1, defined as observable inputs, such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore, requiring an entity to develop its own assumptions. The Company’s financial instruments consist principally of cash and cash equivalents, accounts receivable, accounts payable and debt. The carrying value of cash and cash equivalents, accounts receivable, and accounts payable approximate fair value, primarily due to short maturities. The carrying values of the Company’s debt instruments approximated their fair value based on rates currently available to the Company. Preferred Stock In August 2022, the Company closed on the issuance and sale of its Series A Convertible Preferred Stock (the “Series A Preferred Stock”). The Company issued 115,000 shares of Series A Preferred Stock, par value $0.0001 per share, at a price of $1,000 per share, for an initial investment amount of $115.0 million. Pursuant to the Certification of Designation, cumulative preferred dividends accrue quarterly on the Series A Preferred Stock at a rate of (i) 4.5% per annum until but excluding the seven year anniversary of the closing, and (ii) 7% per annum on and after the seven year anniversary of the closing. See “Note 9. Series A Preferred Stock—Series A Convertible Preferred Stock” for further details. The Series A Preferred Stock and cumulative preferred dividends, net of preferred issuance costs, is presented as Mezzanine Equity of $111.1 million as of September 30, 2022 in the Company’s condensed consolidated balance sheets. The Series A Preferred Stock is classified as Mezzanine Equity because it is redeemable at the option of its holders (upon a deemed liquidation event as defined in “Note 9. Series A Preferred Stock—Series A Convertible Preferred Stock—Deemed Liquidation Event Redemption”) and has a condition for redemption that is not solely within the control of the issuer. Recent Accounting Pronouncements Recently issued accounting pronouncements - Adopted In August 2020, the Financial Standards Accounting Board (“FASB”) issued accounting standards update (“ASU”) 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. ASU 2020-06 simplifies the accounting for convertible instruments by reducing the number of accounting models available for convertible debt instruments and convertible preferred stock. This update also amends the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. ASU 2020-06 amends the diluted earnings per share guidance, including the requirement to use the if-converted method for all convertible instruments. The update also requires entities to provide expanded disclosures about the terms and features of convertible instruments, how the instruments have been reported in the entity’s financial statements, and information about events, conditions, and circumstances that can affect how to assess the amount or timing of an entity’s future cash flows related to those instruments. The guidance is effective for interim and annual periods beginning after December 15, 2021. The Company adopted this guidance in the first quarter of fiscal 2022. Recently issued accounting pronouncements - Not yet adopted In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which provides optional guidance for a limited time to ease the potential burden in accounting for reference rate reform. The new guidance provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments apply only to contracts and hedging relationships that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform. These amendments are effective immediately and may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. The Company evaluated the impact of this standard and determined it did not have a material impact on on our consolidated financial statements. In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which creates an exception to the general recognition and measurement principle for contract assets and contract liabilities from contracts with customers acquired in a business combination. The new guidance will require companies to apply the definition of a performance obligation under accounting standard codification (“ASC”) Topic 606 to recognize and measure contract assets and contract liabilities (i.e., deferred revenue) relating to contracts with customers that are acquired in a business combination. Under current GAAP, an acquirer in a business combination is generally required to recognize and measure the assets it acquires and the liabilities it assumes at fair value on the acquisition date. The new guidance will result in the acquirer recording acquired contract assets and liabilities on the same basis that would have been recorded by the acquiree before the acquisition under ASC Topic 606. These amendments are effective for fiscal years beginning after December 15, 2022, with early adoption permitted. The Company is evaluating the impact of this standard on our consolidated financial statements.