Basis of Presentation and Recent Developments	6 Months Ended
Jun. 30, 2018
Basis of Presentation and Recent Developments [Abstract]
Basis of Presentation and Recent Developments	Note 1 – Basis of Presentation and Recent Developments Middlesex Water Company (Middlesex or the Company) is the parent company and sole shareholder of Tidewater Utilities, Inc. (Tidewater), Tidewater Environmental Services, Inc. (TESI), Pinelands Water Company (Pinelands Water) and Pinelands Wastewater Company (Pinelands Wastewater) (collectively, Pinelands), Utility Service Affiliates, Inc. (USA), Utility Service Affiliates (Perth Amboy) Inc. (USA-PA), and Twin Lakes Utilities, Inc. (Twin Lakes). Southern Shores Water Company, LLC (Southern Shores) and White Marsh Environmental Systems, Inc. (White Marsh) are wholly-owned subsidiaries of Tidewater. The financial statements for Middlesex and its wholly-owned subsidiaries (the Company) are reported on a consolidated basis. All significant intercompany accounts and transactions have been eliminated. The consolidated notes within the 2017 Annual Report on Form 10-K (the 2017 Form 10-K) are applicable to these financial statements and, in the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary (including normal recurring accruals) to present fairly the financial position as of June 30, 2018, the results of operations for the three and six month periods ended June 30, 2018 and 2017 and cash flows for the six month periods ended June 30, 2018 and 2017. Information included in the Condensed Consolidated Balance Sheet as of December 31, 2017, has been derived from the Company’s audited financial statements for the year ended December 31, 2017 included in the 2017 Form 10-K. Recent Developments USA-PA currently operates the City of Perth Amboy, New Jersey’s water and wastewater systems under a 20-year agreement, which expires in December 2018. In July 2018, through a competitive proposal process, USA-PA was awarded a $67 million base professional services contract to continue to operate the water and wastewater systems through December 31, 2028. Recent Accounting Guidance Revenue Recognition - In May 2014, the Financial Accounting Standards Board (FASB) issued guidance, which replaces most of the existing guidance with a single set of principles for recognizing revenue from contracts with customers. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. Disclosures related to Revenue Recognition are included in Note 9, Revenue Recognition from Contracts with Customers. Recognition and Measurement of Financial Assets and Financial Liabilities - In January 2016, the FASB issued guidance which (i) requires all investments in equity securities, including other ownership interests such as partnerships, unincorporated joint ventures and limited liability companies, to be carried at fair value through net income, (ii) requires an incremental recognition and disclosure requirement related to the presentation of fair value changes of financial liabilities for which the fair value option has been elected, (iii) amends several disclosure requirements, including the methods and significant assumptions used to estimate fair value or a description of the changes in the methods and assumptions used to estimate fair value, and (iv) requires disclosure of the fair value of financial assets and liabilities measured at amortized cost at the amount that would be received to sell the asset or paid to transfer the liability. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. Statement of Cash Flows - In August 2016, the FASB issued guidance which amends the previous guidance on the classification of certain cash receipts and payments in the statement of cash flows. The primary purpose of the amendment is to reduce the diversity in practice that has resulted from the lack of consistent principles on this topic. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. Restricted Cash - In November 2016, the FASB issued guidance related to the classification and presentation of restricted cash in the statement of cash flows, which requires entities to a) include restricted cash balances in its cash and cash-equivalent balances in the statement of cash flows and b) include a reconciliation of cash and cash-equivalents per the statement of financial position as compared to the statement of cash flows. Changes in restricted cash and restricted cash equivalents that result from transfers between cash, cash equivalents, and restricted cash and restricted cash equivalents will not be presented as cash flow activities in the statement of cash flows. In addition, an entity with a material balance of amounts described as restricted cash and restricted cash equivalents must disclose information about the nature of the restrictions. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. As a result of adopting this guidance, the consolidated statement of cash flows for the six months ended June 30, 2017 was revised, which resulted in a $0.4 million increase in Cash, Cash Equivalents and Restricted Cash at the Beginning and End of the Period. Employee Benefit Plans-Net Periodic Benefit Cost – In March 2017, the FASB issued guidance which requires entities to (1) disaggregate the current-service-cost component from the other components of net benefit cost and present it with other current compensation costs for related employees in the income statement and (2) present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. In addition, the guidance requires entities to disclose the income statement lines that contain the other components if they are not presented on appropriately described separate lines. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. See Note 8, Employee Benefit Plans for more information. As a result of adopting this guidance, the consolidated statement of income for the three and six months ended June 30, 2017 was revised, which resulted in increases in Operations and Maintenance expense and Other Income (Expense), net of $0.2 million and $0.4 million, respectively. Leases - In February 2016, the FASB issued guidance related to leases which will require lessees to recognize a lease liability (a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis) and a right-of-use asset (an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term). In January 2018, the FASB issued additional guidance related to leases which permits entities to forgo the evaluation of existing land easement arrangements to determine if they contain a lease as part of the adoption of this guidance. Land easement arrangements, or modifications to existing arrangements, entered into after adoption of this guidance will need to be evaluated to determine if they meet the definition of a lease. The guidance is effective for fiscal years beginning after December 15, 2018 with early adoption permitted. The Company is currently assessing the impact of this standard on its consolidated financial statements and footnote disclosures, but, based on the Company’s current leasing activity, does not expect the adoption of this guidance to have a material impact on the Company’s financial statements. There are no other new adopted or proposed accounting guidance that the Company is aware of that could have a material impact on the Company’s financial statements.

Basis of Presentation and Recent Developments

6 Months Ended

Jun. 30, 2018

Basis of Presentation and Recent Developments [Abstract]

Basis of Presentation and Recent Developments

Note 1 – Basis of Presentation and Recent Developments

Middlesex Water Company (Middlesex or the Company) is the parent company and sole shareholder of Tidewater Utilities, Inc. (Tidewater), Tidewater Environmental Services, Inc. (TESI), Pinelands Water Company (Pinelands Water) and Pinelands Wastewater Company (Pinelands Wastewater) (collectively, Pinelands), Utility Service Affiliates, Inc. (USA), Utility Service Affiliates (Perth Amboy) Inc. (USA-PA), and Twin Lakes Utilities, Inc. (Twin Lakes). Southern Shores Water Company, LLC (Southern Shores) and White Marsh Environmental Systems, Inc. (White Marsh) are wholly-owned subsidiaries of Tidewater. The financial statements for Middlesex and its wholly-owned subsidiaries (the Company) are reported on a consolidated basis. All significant intercompany accounts and transactions have been eliminated.

The consolidated notes within the 2017 Annual Report on Form 10-K (the 2017 Form 10-K) are applicable to these financial statements and, in the opinion of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments necessary (including normal recurring accruals) to present fairly the financial position as of June 30, 2018, the results of operations for the three and six month periods ended June 30, 2018 and 2017 and cash flows for the six month periods ended June 30, 2018 and 2017. Information included in the Condensed Consolidated Balance Sheet as of December 31, 2017, has been derived from the Company’s audited financial statements for the year ended December 31, 2017 included in the 2017 Form 10-K.

Recent Developments

USA-PA currently operates the City of Perth Amboy, New Jersey’s water and wastewater systems under a 20-year agreement, which expires in December 2018. In July 2018, through a competitive proposal process, USA-PA was awarded a $67 million base professional services contract to continue to operate the water and wastewater systems through December 31, 2028.

Recent Accounting Guidance

Revenue Recognition - In May 2014, the Financial Accounting Standards Board (FASB) issued guidance, which replaces most of the existing guidance with a single set of principles for recognizing revenue from contracts with customers. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. Disclosures related to Revenue Recognition are included in Note 9, Revenue Recognition from Contracts with Customers.

Recognition and Measurement of Financial Assets and Financial Liabilities - In January 2016, the FASB issued guidance which (i) requires all investments in equity securities, including other ownership interests such as partnerships, unincorporated joint ventures and limited liability companies, to be carried at fair value through net income, (ii) requires an incremental recognition and disclosure requirement related to the presentation of fair value changes of financial liabilities for which the fair value option has been elected, (iii) amends several disclosure requirements, including the methods and significant assumptions used to estimate fair value or a description of the changes in the methods and assumptions used to estimate fair value, and (iv) requires disclosure of the fair value of financial assets and liabilities measured at amortized cost at the amount that would be received to sell the asset or paid to transfer the liability. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements.

Statement of Cash Flows - In August 2016, the FASB issued guidance which amends the previous guidance on the classification of certain cash receipts and payments in the statement of cash flows. The primary purpose of the amendment is to reduce the diversity in practice that has resulted from the lack of consistent principles on this topic. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements.

Restricted Cash - In November 2016, the FASB issued guidance related to the classification and presentation of restricted cash in the statement of cash flows, which requires entities to a) include restricted cash balances in its cash and cash-equivalent balances in the statement of cash flows and b) include a reconciliation of cash and cash-equivalents per the statement of financial position as compared to the statement of cash flows. Changes in restricted cash and restricted cash equivalents that result from transfers between cash, cash equivalents, and restricted cash and restricted cash equivalents will not be presented as cash flow activities in the statement of cash flows. In addition, an entity with a material balance of amounts described as restricted cash and restricted cash equivalents must disclose information about the nature of the restrictions. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. As a result of adopting this guidance, the consolidated statement of cash flows for the six months ended June 30, 2017 was revised, which resulted in a $0.4 million increase in Cash, Cash Equivalents and Restricted Cash at the Beginning and End of the Period.

Employee Benefit Plans-Net Periodic Benefit Cost – In March 2017, the FASB issued guidance which requires entities to (1) disaggregate the current-service-cost component from the other components of net benefit cost and present it with other current compensation costs for related employees in the income statement and (2) present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. In addition, the guidance requires entities to disclose the income statement lines that contain the other components if they are not presented on appropriately described separate lines. The guidance was effective January 1, 2018 and did not have a material impact on the Company’s financial statements. See Note 8, Employee Benefit Plans for more information. As a result of adopting this guidance, the consolidated statement of income for the three and six months ended June 30, 2017 was revised, which resulted in increases in Operations and Maintenance expense and Other Income (Expense), net of $0.2 million and $0.4 million, respectively.

Leases - In February 2016, the FASB issued guidance related to leases which will require lessees to recognize a lease liability (a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis) and a right-of-use asset (an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term). In January 2018, the FASB issued additional guidance related to leases which permits entities to forgo the evaluation of existing land easement arrangements to determine if they contain a lease as part of the adoption of this guidance. Land easement arrangements, or modifications to existing arrangements, entered into after adoption of this guidance will need to be evaluated to determine if they meet the definition of a lease. The guidance is effective for fiscal years beginning after December 15, 2018 with early adoption permitted. The Company is currently assessing the impact of this standard on its consolidated financial statements and footnote disclosures, but, based on the Company’s current leasing activity, does not expect the adoption of this guidance to have a material impact on the Company’s financial statements.

There are no other new adopted or proposed accounting guidance that the Company is aware of that could have a material impact on the Company’s financial statements.