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Accounting policies (Policies) | 6 Months Ended
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Jun. 30, 2023
Accounting policies |
Basis of consolidation | Basis of consolidation: The accompanying condensed consolidated financial statements include the accounts of the Company’s (i) wholly-owned subsidiaries, Aerex Industries, Inc. (“Aerex”), Aquilex, Inc. (“Aquilex”), Cayman Water Company Limited (“Cayman Water”), Consolidated Water Cooperatief, U.A. (“CW-Cooperatief”), Consolidated Water U.S. Holdings, Inc. (“CW-Holdings”), DesalCo Limited (“DesalCo”), Kalaeloa Desalco LLC (“Kalaeloa Desalco”), Ocean Conversion (Cayman) Limited (“OC-Cayman”), and PERC Water Corporation ("PERC"); and (ii) majority-owned subsidiaries Consolidated Water (Bahamas) Ltd. (“CW-Bahamas”), N.S.C. Agua, S.A. de C.V. (“NSC”), and Aguas de Rosarito S.A.P.I. de C.V. (“AdR”). The Company’s investment in its affiliate Ocean Conversion (BVI) Ltd. (“OC-BVI”) is accounted for using the equity method of accounting. All significant intercompany balances and transactions have been eliminated in consolidation. On January 4, 2023, as a result of CW-Holdings' exercise of a call option in October 2022, CW-Holdings purchased the remaining 39% ownership interest in PERC for $2.4 million in cash and 368,383 shares of the Company’s common stock, having a value of approximately $5.36 million based upon the opening trading price of the Company’s common stock on The Nasdaq Global Market on the date of the transaction. After giving effect to this purchase, CW-Holdings owns 100% of the outstanding capital stock of PERC. In September 2021, Kalaeloa Desalco was formed to pursue a project encompassing the design, construction, operations and maintenance of a seawater reverse osmosis desalination plant in Oahu, Hawaii. On June 2, 2023, Kalaeloa Desalco, which is jointly owned by PERC and CW-Holdings, signed a definitive agreement with the Honolulu Board of Water Supply to design, build, operate and maintain a 1.7 million gallons per day seawater reverse osmosis desalination plant in Oahu, Hawaii. The accompanying interim condensed consolidated financial statements are unaudited. These condensed consolidated financial statements reflect all adjustments (which are of a normal recurring nature) that, in the opinion of management, are necessary to fairly present the Company’s consolidated financial position, results of operations and cash flows as of and for the periods presented. The consolidated results of operations for these interim periods are not necessarily indicative of the operating results for future periods, including the fiscal year ending December 31, 2023. These condensed consolidated financial statements and notes are presented in accordance with the rules and regulations of the United States Securities and Exchange Commission (“SEC”) relating to interim financial statements and in conformity with accounting principles generally accepted in the United States of America (“US GAAP”). Certain information and note disclosures normally included in annual financial statements prepared in accordance with US GAAP have been condensed or omitted in these condensed consolidated financial statements pursuant to SEC rules and regulations, although the Company believes that the disclosures made herein are adequate to make the information not misleading. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.
Foreign currency | Foreign currency: The Company’s reporting currency is the United States dollar (“US$”). The functional currency of the Company and its foreign operating subsidiaries (other than NSC, AdR, and CW-Cooperatief) is the currency for each respective country. The functional currency for NSC, AdR, and CW-Cooperatief is the US$. NSC and AdR conduct business in US$ and Mexican pesos and CW-Cooperatief conducts business in US$ and euros. The exchange rates for the Cayman Islands dollar and the Bahamian dollar are fixed to the US$. The exchange rates for conversion of Mexican pesos and euros into US$ vary based upon market conditions. Net foreign currency gains arising from transactions and re-measurements were $24,397 and $6,988 for the three months ended June 30, 2023 and 2022, respectively, and $50,176 and $29,034 for the six months ended June 30, 2023 and 2022, and are included in “Other income (expense) - Other” in the accompanying condensed consolidated statements of income.
Cash and cash equivalents | Cash and cash equivalents: Cash and cash equivalents consist of demand deposits at banks and certificates of deposit at banks with an original maturity of three months or less. Cash and cash equivalents as of June 30, 2023 and December 31, 2022 include approximately $5.1 million and $7.4 million, respectively, of certificates of deposits with an original maturity of three months or less. Certain transfers from the Company’s Bahamas bank accounts to Company bank accounts in other countries require the approval of the Central Bank of The Bahamas. The equivalent United States dollar cash balances for deposits held in The Bahamas as of June 30, 2023 and December 31, 2022 were approximately $10.1 million and $5.7 million, respectively.
Goodwill and intangible assets | Goodwill and intangible assets: Goodwill represents the excess cost of an acquired business over the fair value of the assets and liabilities of the acquired business as of the date of acquisition. Goodwill and intangible assets recorded as a result of a business combination and determined to have an indefinite useful life are not amortized but are tested for impairment annually or upon the identification of a triggering event. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values and reviewed periodically for impairment. The Company evaluates the possible impairment of goodwill annually as part of its reporting process for the fourth quarter of each fiscal year. Management identifies the Company’s reporting units for goodwill impairment testing purposes, which consist of Cayman Water, the bulk segment (which is comprised of CW-Bahamas and OC-Cayman), PERC, and the manufacturing segment (i.e., Aerex), and determines the carrying value of each reporting unit by assigning the assets and liabilities, including the existing goodwill and intangible assets, to those reporting units. The Company determines the fair value of each reporting unit and compares these fair values to the carrying amounts of the reporting units. To the extent the carrying amount of a reporting unit exceeds the fair value of the reporting unit, an impairment loss is recorded. ​ As of December 31, 2022, the Company elected to assess qualitative factors to determine whether it was necessary to perform the quantitative goodwill impairment testing conducted in prior years for all goodwill reporting units other than the manufacturing reporting unit. The Company assessed relevant events and circumstances to evaluate whether it is more likely than not that the fair values of such reporting units are less than their carrying values. The events and circumstances assessed for each unit included macroeconomic conditions, industry and market conditions, cost factors, overall financial performance, and other relevant events. Based upon this qualitative assessment the Company determined that it was more likely than not that the fair values of its Cayman Water and bulk segment reporting units exceeded their carrying values as of December 31, 2022. Based upon the Company’s negotiated, arms-length purchase of the remaining 39% equity interest in PERC from its minority shareholders for $7.8 million in January 2023, the fair value of the Company’s PERC reporting unit exceeded its carrying value by 79% as of December 31, 2022. ​ For the year ended December 31, 2022, the Company estimated the fair value of its manufacturing reporting unit by applying the discounted cash flow method, which relied upon seven-year discrete projections of operating results, working capital and capital expenditures, along with a terminal value subsequent to the discrete period. These seven-year projections were based upon historical and anticipated future results, general economic and market conditions, and considered the impact of planned business and operational strategies. The discount rates for the calculations represented the estimated cost of capital for market participants at the time of the analysis. The Company also estimated the fair value of its manufacturing reporting unit for the year ended December 31, 2022 by applying the guideline public company method. The Company weighted the fair values estimated for its manufacturing reporting unit under each method and summed such weighted fair values to estimate the overall fair value for the reporting unit. The respective weightings the Company applied to each method for the year ended December 31, 2022 were 80% to the discounted cash flow method and 20% to the guideline public company method. ​ The fair value the Company estimated for its manufacturing reporting unit exceeded its carrying amount by 63% as of December 31, 2022. ​ The Company believes the inherent uncertainties associated with the accounting estimates and assumptions it uses for its estimates of its manufacturing reporting unit’s fair value have increased due to the current, less predictable economic conditions, which have resulted in increasing raw material prices, extended and unexpected delays in the procurement and delivery of its raw materials, and have also, the Company believes, adversely affected its customers. Should interest rates rise significantly in the future the Company would likely be required to increase the discount rate it uses under the discounted cash flow method to estimate the fair value of this reporting unit, and such increased discount rate in and of itself could decrease the estimated fair value of the manufacturing reporting unit under the discounted cash flow method. ​ As noted previously, based upon the Company’s estimation prepared as of December 31, 2022, the fair value of the Company’s manufacturing reporting unit exceeded its carrying value by 63%. However, if the Company determines in the future that Aerex’s discounted future cash inflows will be less than its present expectations, the Company may be required to record additional impairment losses to reduce the remaining carrying values of its manufacturing reporting unit’s goodwill and its remaining unamortized intangible assets balances, which amounted to $1,985,211 and $707,778, respectively, as of June 30, 2023. Any such impairment losses could have a material adverse impact on the Company’s consolidated results of operations. Income taxes: The Company accounts for the income taxes arising from the operations of its United States subsidiaries under the asset and liability method. Deferred tax assets and liabilities, if any, are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is provided to the extent any deferred tax asset may not be realized. ​ The Company is not presently subject to income taxes in the other countries in which it operates. ​
Revenue recognition | Revenue recognition: Revenue is recognized when control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The following table presents the Company’s revenue disaggregated by revenue source. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, |  | Six Months Ended June 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Retail revenue | ​ | $ | 7,573,329 | ​ | $ | 6,526,803 | ​ | $ | 15,344,424 | ​ | $ | 12,840,003
Bulk revenue | ​ |  | 8,482,495 | ​ |  | 8,423,749 | ​ |  | 17,486,868 | ​ |  | 15,774,393
Services revenue | ​ |  | 24,093,963 | ​ |  | 5,055,483 | ​ |  | 36,815,664 | ​ |  | 9,799,303
Manufacturing revenue | ​ |  | 4,087,476 | ​ |  | 1,061,092 | ​ |  | 7,459,297 | ​ |  | 2,211,333
Total revenue | ​ | $ | 44,237,263 | ​ | $ | 21,067,127 | ​ | $ | 77,106,253 | ​ | $ | 40,625,032
​ Retail revenue The Company produces and supplies water to end-users, including residential, commercial and governmental customers in the Cayman Islands under an exclusive retail license issued to Cayman Water by the Cayman Islands government to provide water in two of the three most populated areas on Grand Cayman Island. Customers are billed on a monthly basis based on metered consumption and bills are typically collected within 30 to 45 days after the billing date. Receivables not collected within 45 days subject the customer to disconnection from water service. The Company recognizes revenue from water sales at the time water is supplied to the customer’s premises. The amount of water supplied is determined and invoiced based upon water meter readings performed at the end of each month. All retail water contracts are month-to-month contracts. The Company has elected the “right to invoice” practical expedient for revenue recognition on its retail water sale contracts and recognizes revenue in the amount to which the Company has a right to invoice. Bulk revenue The Company produces and supplies water to government-owned utilities in the Cayman Islands and The Bahamas. OC-Cayman provides bulk water to the Water Authority-Cayman (“WAC”), a government-owned utility and regulatory agency, under two agreements. The WAC in turn distributes such water to properties in Grand Cayman outside of Cayman Water’s retail license area. The Company sells bulk water in The Bahamas through its majority-owned subsidiary, CW-Bahamas, under two agreements with the Water and Sewerage Corporation of The Bahamas (“WSC”), which distributes such water through its own pipeline system to residential, commercial and tourist properties on the Island of New Providence. The Company has elected the “right to invoice” practical expedient for revenue recognition on its bulk water sale contracts and recognizes revenue in the amount to which the Company has a right to invoice. Services and Manufacturing revenue The Company provides design, engineering, management, procurement and construction services for desalination infrastructure through DesalCo, which serves customers in the Cayman Islands, The Bahamas and the British Virgin Islands. The Company also designs, builds, sells, operates and manages water, wastewater and water reuse infrastructure through PERC. All of PERC's customers are companies or governmental entities located in the U.S. The Company, through Aerex, is a custom and specialty manufacturer of systems and products applicable to commercial, municipal and industrial water production and treatment. Substantially all of Aerex’s customers are U.S. companies. The Company generates construction and services revenue from DesalCo and PERC and generates manufacturing revenue from Aerex. The Company recognizes revenue for its construction and custom/specialized manufacturing contracts over time under the input method using costs incurred (which represents work performed) to date relative to total estimated costs at completion to measure progress toward satisfying a contract’s performance obligations as such measure best reflects the transfer of control of the promised good to the customer. Contract costs include labor, materials and subcontractor costs. The Company follows this method since it can make reasonably dependable estimates of the revenue and costs applicable to the various stages of a contract. Under this input method, the Company records revenue and recognizes profit or loss as work on the contract progresses. The Company estimates total project costs and profit to be earned on each long-term, fixed price contract prior to commencement of work on the contract and updates these estimates as work on the contract progresses. The cumulative amount of revenue recorded on a contract at a specified point in time is that percentage of total estimated revenue that incurred costs to date comprise of estimated total contract costs. Due to the extended time it may take to complete many of the Company’s contracts and the scope and nature of the work required to be performed on those contracts, the estimations of total revenue and costs at completion is complicated and subject to many variables and, accordingly, are subject to changes. When adjustments in estimated total contract revenue or estimated total contract costs are required, any changes from prior estimates are recognized in the current period for the inception-to-date effect of such changes. The Company recognizes the full amount of any estimated loss on a contract at the time the estimates indicate such a loss. Any contract assets are classified as current assets. Contract liabilities on uncompleted contracts, if any, are classified as current liabilities. During the three months ended June 30, 2023, the Company adjusted its previous estimates of the total contract costs for two of its construction contracts. These adjustments increased the services segment’s income from operations and the Company’s consolidated net income by $1,761,753 for the three and six months ended June 30, 2023. This adjustment increased diluted earnings per share by $0.11 for the three and six months ended June 30, 2023. The Company has elected the “right to invoice” practical expedient for revenue recognition on its services agreements and recognizes revenue in the amount to which the Company has a right to invoice. Revenue recognized and amounts billed on contracts in progress are summarized as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31, | ​
​ | ​ | 2023 | ​ | 2022 | ​
Revenue recognized to date on contracts in progress |  | $ | 58,727,821 | ​ | $ | 25,469,014 | ​
Amounts billed to date on contracts in progress | ​ |  | (68,535,879) | ​ |  | (33,407,182) | ​
Retainage | ​ | ​ | 5,072,338 | ​ | ​ | 2,047,969 | ​
Net contract liability | ​ | $ | (4,735,720) | ​ | $ | (5,890,199) | ​
​ The above net balances are reflected in the accompanying condensed consolidated balance sheets as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31, | ​
​ | ​ | 2023 | ​ | 2022 | ​
Contract assets |  | $ | 8,192,770 |  | $ | 2,913,722 | ​
Contract liabilities | ​ |  | (12,928,490) | ​ |  | (8,803,921) | ​
Net contract liability | ​ | $ | (4,735,720) | ​ | $ | (5,890,199) | ​
​ The significant increase in contract liabilities from December 31, 2022 to June 30, 2023 is primarily attributable to billings on PERC’s construction contract with Liberty (Litchfield Park Water & Sewer) Corp. (“Liberty Utilities”) for a water treatment facility in Arizona. ​ As of June 30, 2023, the Company had unsatisfied or partially unsatisfied performance obligations for contracts in progress representing approximately $67.3 million in aggregate transaction price for contracts with an original expected length of greater than one year. The Company expects to earn revenue as it satisfies its performance obligations under those contracts in the amount of approximately $45.6 million during the remainder of the year ending December 31, 2023 and approximately $21.7 million thereafter. In addition, the Company recognized revenue of approximately $7.2 million in the six months ended June 30, 2023, that was included in the contract liability balance as of December 31, 2022. Practical Expedients and Exemptions The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which the Company recognizes revenue at the amount to which it has the right to invoice for services performed.
Comparative amounts | Comparative amounts: Certain amounts presented in the financial statements previously issued for 2022 have been reclassified to conform to the current periods’ presentation.

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