Global Water Resources (GWRS) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 06, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	GWRS
Entity Registrant Name	Global Water Resources, Inc.
Entity Central Index Key	1,434,728
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		21,455,593

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
PROPERTY, PLANT AND EQUIPMENT:
Property, plant and equipment	$ 287,564	$ 289,051
Less accumulated depreciation	(74,830)	(75,592)
Net property, plant and equipment	212,734	213,459
CURRENT ASSETS:
Cash and cash equivalents	3,778	5,248
Accounts receivable — net	1,705	1,528
Due from affiliates	404	430
Accrued revenue	2,135	1,759
Prepaid expenses and other current assets	769	700
Total current assets	8,791	9,665
OTHER ASSETS:
Goodwill		0
Intangible assets — net	12,772	12,772
Regulatory asset	1,900	1,900
Bond service fund and other restricted cash	484	436
Equity method investment	185	345
Other noncurrent assets	59	20
Total other assets	17,114	15,444
TOTAL ASSETS	238,639	238,568
CURRENT LIABILITIES:
Accounts payable	523	321
Accrued expenses	7,482	7,252
Customer and meter deposits	1,374	1,395
Long-term debt and capital leases — current portion	39	8
Total current liabilities	9,418	8,976
NONCURRENT LIABILITIES:
Long-term debt and capital leases	114,472	114,363
Deferred revenue - ICFA	17,358	19,746
Regulatory liability	8,800	8,500
Advances in aid of construction	63,107	62,725
Contributions in aid of construction — net	4,339	4,425
Deferred income tax liabilities, net	3,966	3,114
Acquisition liability	934	934
Other noncurrent liabilities	615	962
Total noncurrent liabilities	213,633	214,732
Total liabilities	223,051	223,708
Commitments and contingencies (Refer to Note 14)
SHAREHOLDERS' EQUITY:
Common stock, $0.01 par value, 60,000,000 shares authorized; 19,756,266 and 19,631,266 shares issued as of June 30, 2018 and December 31, 2017, respectively.	197	196
Treasury Stock, 20,673 and no shares at June 30, 2018 and December 31, 2017, respectively.	0	0
Paid in capital	12,439	14,288
Retained earnings	2,952	376
Total shareholders' equity	15,588	14,860
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 238,639	$ 238,568

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	60,000,000	60,000,000
Common stock, issued (in shares)	19,756,266	19,631,266
Treasury Stock, Shares	(20,673)	0

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
REVENUES:
Water services	$ 3,916,000	$ 3,897,000	$ 7,031,000	$ 6,682,000
Wastewater and recycled water services	4,518,000	4,230,000	8,815,000	8,218,000
Unregulated revenues	2,404,000	18,000	2,417,000	36,000
Total revenues	10,838,000	8,145,000	18,263,000	14,936,000
OPERATING EXPENSES:
Operations and maintenance	1,621,000	1,451,000	3,130,000	2,925,000
Operations and maintenance - related party	404,000	365,000	760,000	725,000
General and administrative	2,820,000	2,809,000	5,217,000	5,019,000
Depreciation	1,889,000	1,808,000	3,688,000	3,454,000
Total operating expenses	6,734,000	6,433,000	12,795,000	12,123,000
OPERATING INCOME	4,104,000	1,712,000	5,468,000	2,813,000
OTHER INCOME (EXPENSE):
Interest income	8,000	6,000	15,000	10,000
Interest expense	(1,304,000)	(1,305,000)	(2,535,000)	(2,617,000)
Other	154,000	336,000	477,000	688,000
Other - related party	60,000	(33,000)	58,000	181,000
Total other expense	(1,082,000)	(996,000)	(1,985,000)	(1,738,000)
INCOME BEFORE INCOME TAXES	3,022,000	716,000	3,483,000	1,075,000
INCOME TAX EXPENSE	(766,000)	(291,000)	(907,000)	(461,000)
NET INCOME	$ 2,256,000	$ 425,000	$ 2,576,000	$ 614,000
Basic earnings per common share	$ 0.11	$ 0.02	$ 0.13	$ 0.03
Diluted earnings per common share	0.11	0.02	0.13	0.03
Dividends declared per common share	$ 0.07	$ 0.07	$ 0.14	$ 0.14
Weighted average number of common shares used in the determination of:
Basic	19,640,295	19,589,782	19,635,805	19,585,548
Diluted	19,683,072	19,646,448	19,676,827	19,633,269

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Paid-in Capital	Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Shares	0
Treasury Stock, Value	$ 0
BALANCE at the beginning (in shares) at Dec. 31, 2017		19,631,266
BALANCE, at the beginning at Dec. 31, 2017	14,860	$ 196	$ 0	$ 14,288	$ 376
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend declared	(2,786)			(2,786)
Stock option exercise (in shares)		125,000
Stock option exercise	750	$ 1		749
Stock compensation	188			188
Net income	2,576				2,576
BALANCE at the end (in shares) at Jun. 30, 2018		19,756,266	(20,673)
BALANCE, at the end at Jun. 30, 2018	$ 15,588	$ 197	$ 0	$ 12,439	$ 2,952
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Shares	(20,673)
Treasury Stock, Value	$ 0

CONSOLIDATED STATEMENT OF SHARE

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share)	$ 0.07	$ 0.07	$ 0.14	$ 0.14

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,576	$ 614
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred compensation	595	1,082
Depreciation	3,688	3,454
Amortization of deferred debt issuance costs and discounts	22	22
Loss on equity investment	160	5
Other (gains) and losses	(28)	5
Provision for doubtful accounts receivable	(3)	55
Deferred income tax expense	852	396
Changes in assets and liabilities
Accounts receivable	(53)	(256)
Other current assets	(420)	(771)
Accounts payable and other current liabilities	(148)	(951)
Other noncurrent assets	0	55
Other noncurrent liabilities	(1,942)	(32)
Net cash provided by operating activities	5,299	3,678
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(2,458)	(12,771)
Payments for (Proceeds from) Previous Acquisition	(2,620)	0
Deposits of restricted cash, net	(47)	(3)
Other cash flows from investing activities	64	0
Net cash used in investing activities	(5,061)	(12,774)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid	(2,786)	(2,655)
Advances in aid of construction	382	270
Proceeds from stock option exercise	750	188
Principal payments under capital lease	(8)	(80)
Loan repayments	(7)	0
Debt issuance costs paid	(39)	0
Net cash used in financing activities	(1,708)	(2,277)
DECREASE IN CASH AND CASH EQUIVALENTS	(1,470)	(11,373)
CASH AND CASH EQUIVALENTS — Beginning of period	5,248	20,498
CASH AND CASH EQUIVALENTS – End of period	$ 3,778	$ 9,125

Description of Business, Basis

Description of Business, Basis of Presentation, Corporate Transactions, Significant Accounting Policies, and Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Description of Business, Basis of Presentation, Corporate Transactions, Significant Accounting Policies, and Recent Accounting Pronouncements	BASIS OF PRESENTATION, CORPORATE TRANSACTIONS, SIGNIFICANT ACCOUNTING POLICIES, AND RECENT ACCOUNTING PRONOUNCEMENTS Basis of Presentation and Principles of Consolidation The condensed consolidated financial statements of Global Water Resources, Inc. (the “Company”, “GWRI”, “we”, “us”, or “our”) and related disclosures as of June 30, 2018 and for the three and six months ended June 30, 2018 and 2017 are unaudited. The December 31, 2017 condensed consolidated balance sheet data was derived from the Company’s audited consolidated financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These financial statements follow the same accounting policies and methods of their application as the Company’s most recent annual consolidated financial statements. These financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2017 . In our opinion, these financial statements include all normal and recurring adjustments necessary for the fair statement of the results for the interim period. The results of operations for the three and six months ended June 30, 2018 are not necessarily indicative of the results to be expected for the full year, due to the seasonality of our business. The Company prepares its financial statements in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC"). The preparation of the financial statements in conformity with U.S. 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 income and expenses during the reporting period. Actual results could differ from those estimates. The U.S. dollar is the Company’s reporting currency and functional currency. The Company qualifies as an “emerging growth company”, as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), under the rules and regulations of the SEC. An emerging growth company may take advantage of specified reduced reporting and other requirements that are otherwise applicable generally to public companies. The Company elected to take advantage of these provisions for up to five years or such earlier time that the Company is no longer an emerging growth company. The Company has elected to take advantage of some of the reduced disclosure obligations regarding financial statements. Also, as an emerging growth company the Company can elect to delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. The Company has chosen to take advantage of this extended accounting transition provision. Corporate Transactions Stipulated Condemnation of the Operations and Assets of Valencia On July 14, 2015, the Company closed the stipulated condemnation to transfer the operations and assets of Valencia to the City of Buckeye. Terms of the condemnation were agreed upon through a settlement agreement and stipulated final judgment of condemnation wherein the City of Buckeye acquired all the operations and assets of Valencia and assumed operation of the utility upon close. The City of Buckeye paid the Company $55.0 million at close, plus an additional $108,000 in working capital adjustments. The City of Buckeye is obligated to pay the Company a growth premium equal to $3,000 for each new water meter installed within Valencia’s prior service areas in the City of Buckeye, for a 20 -year period ending December 31, 2034 , subject to a maximum payout of $45.0 million over the term of the agreement. Sale of Loop 303 Contracts In September 2013, the Company sold its Wastewater Facilities Main Extension Agreements (“MXA”) and Offsite Water Management Agreements (“WMA") for the contemplated Loop 303 service area along with their related rights and obligations to EPCOR Water Arizona Inc. (“EPCOR”) (collectively the “Transfer of Project Agreement”, or “Loop 303 Contracts”). Pursuant to the Transfer of Project Agreement, EPCOR agreed to pay GWRI approximately $4.1 million over a multi-year period. As part of the consideration, GWRI agreed to complete certain engineering work required in the WMAs, which work had been completed prior to January 1, 2015. As the engineering work has been completed, the Company effectively has no further obligations under the WMAs, the MXAs, or the Transfer of Project Agreement. Prior to January 1, 2015, the Company had received $2.8 million of proceeds and recognized income of approximately $3.3 million within other income (expense) in the statement of operations related to the gain on sale of these agreements and the proceeds received prior to January 1, 2015 for engineering work required in the WMAs. The Company received additional proceeds of approximately $296,000 in April 2015 and recognized those amounts as income at that time. Receipt of the remaining $1.0 million of proceeds will be recorded as additional income over time as certain milestones are met between EPCOR and the developers/landowners. Merger with GWR Global Water Resources Corp. (“GWRC”) On May 3, 2016, the Company completed the merger of GWRC into GWRI. At the time of the merger, GWRC ceased to exist as a British Columbia corporation and the Company continued as the surviving entity of the merger (the "Reorganization Transaction"). In conjunction with the merger of GWRC into GWRI, the Company recorded an approximate $1.4 million tax liability associated with the transfer of GWRC from Canada to the United States, which liability has since been settled. Private Letter Ruling On June 2, 2016, the Company received a Private Letter Ruling from the Internal Revenue Service ("IRS") that, for purposes of deferring the approximately $19.4 million gain realized from the condemnation of the operations and assets of Valencia Water Company, Inc. ("Valencia"), determined that the assets converted upon the condemnation of such assets could be replaced through certain reclamation facility improvements contemplated by the Company under Internal Revenue Code §1033 as property similar or related in service or use. In June 2016, the Company converted all operating subsidiaries from corporations to limited liability companies to take full advantage of the benefits of such ruling. Pursuant to Internal Revenue Code §1033, the Company would have been able to defer the gain on condemnation through the end of 2017. On April 18, 2017, the Company filed a request for a one-year extension to defer the gain to the end of 2018, which the IRS approved on August 8, 2017. Following the approval of the extension, the Company has slightly modified the timing of certain planned investments within its capital improvement plan in accordance with Internal Revenue Code §1033. Accordingly, the Company substantially completed these investments in 2017, with some remaining improvements intended to be completed in 2018. As a result of the Private Letter Ruling, the Company increased capital expenditures in 2017 as compared to recent years, and expects corresponding reductions to occur in 2018, 2019, and beyond. As of June 30, 2018 , our remaining deferred tax liability relating to the Valencia condemnation was approximately $4.7 million . We plan to file another extension during 2018 which, if approved, will defer the remaining gain to the end of 2019. Acquisition of Eagletail Water Company On May 15, 2017, the Company acquired Eagletail Water Company ("Eagletail") via merger. At the time of acquisition, Eagletail, a small water utility located west of metropolitan Phoenix, added approximately 55 active water connections and eight square miles of approved service area to the Company’s existing regional service footprint. Total consideration was approximately $80,000 . As part of the transaction, the Company acquired assets of approximately $80,000 and assumed liabilities of approximately $78,000 . Acquisition of Turner Ranches Water and Sanitation Company On May 30, 2018, the Company acquired Turner Ranches Water and Sanitation Company ("Turner"), a non-potable irrigation water utility in Mesa, Arizona, for total consideration of approximately $2,800,000 in cash. Refer to Note 6 — "Acquisitions" for additional information regarding the Turner acquisition. ACC Tax Docket At June 30, 2018 and December 31, 2017, the Company had a regulatory asset and regulatory liability in the amount of $1.9 million and $0.6 million , respectively, related to the Federal Tax Cuts and Jobs Act (the "TCJA") signed into law on December 22, 2017. Under ASC Topic 740, Income Taxes , the tax effects of changes in tax laws must be recognized in the period in which the law is enacted. ASC 740 also requires deferred income tax assets and liabilities to be measured at the enacted tax rate expected to apply when temporary differences are to be realized or settled. Thus, at the date of enactment, the Company’s deferred income taxes were re-measured based upon the new tax rate. For the Company’s regulated entities, substantially all of the change in deferred income taxes is recorded as an offset to either a regulatory asset or liability because the impact of changes in the rates are expected to be recovered from or refunded to customers. On December 20, 2017, the Arizona Corporation Commission (the “ACC”) opened a docket to address the utility ratemaking implications of the TCJA. The ACC is considering the impact for regulated utilities, as it is expected that certain effects of the TCJA add to rate base and others reduce rate base. Numerous companies, including our regulated utilities, filed comments with the ACC in January 2018. The ACC subsequently approved an order in February 2018 requiring Arizona utilities to apply regulatory accounting treatment, which includes the use of regulatory assets and regulatory liabilities, to address all impacts from the enactment of the TCJA. The order also required certain utilities (including all of our currently operating regulated utilities other than Eagletail and Turner) to have made one of the following three types of filings by April 7, 2018: 1) file an application for a tax expense adjustor mechanism, 2) file an intent to file a rate case within 90 days, or 3) any such other application to address rate making implications of the TCJA. Accordingly, we filed a proposal for a tax expense adjustor mechanism with the ACC on April 9, 2018, which was subsequently amended through an updated filing with the ACC on July 2, 2018. The updated filing set forth a number of alternative proposals, including that the ACC make no reduction to regulated revenues or, in the alternative, that the ACC approve a phased reduction in regulated revenues. The proposals are in the process of being reviewed by the ACC, and the ACC will issue an order approving, modifying, or rejecting the proposals. At this point, it is not clear what action the ACC will take regarding the TCJA issues. As a result, we cannot determine the exact effect of the TCJA on currently enacted rates. However, based on currently available information and assuming the same number of total active connections as of December 31, 2017, we estimate that the TCJA, based on currently enacted rates, could adversely impact our revenue by as much as approximately $1.1 million on an annual basis. On August 3, 2018, the ACC Staff published a recommendation in response to the Company's proposal. We now believe it is more likely than not that the ACC will require a rate reduction, and thus, have recorded a $378,000 reduction to revenue for the three and six months ended June 30, 2018 . The reduction reflects the staff proposal on the phase-in of tax reform filed August 3, 2018 using the Company's estimated impacts of tax reform filed on July 2, 2018. In addition, the ACC Chairman has noted that there may be some unintended consequences related to the tax treatment of contributions in aid of construction (“CIAC”) and advances in aid of construction (“AIAC”). We continue to have discussions with developers, homebuilders, and other utilities regarding the AIAC and CIAC issues related to the TCJA and have also filed comments with the ACC on June 22, 2018 regarding these issues. On August 2, 2018, the ACC Staff recommended the adoption of three alternative methodologies for funding the income tax on AIAC and CIAC: 1) full gross-up of the tax to the contributor; 2) self-payment of the tax by the utility; or 3) a hybrid sharing arrangement where the contributor pays a portion of the tax and the utility pays a portion of the tax. Significant Accounting Policies Basic and Diluted Earnings per Common Share As of June 30, 2018 , the Company had 555,500 options outstanding to acquire shares of the Company's common stock. The 150,000 options outstanding from the 2016 option grant provide 42,777 and 41,022 common share equivalents for the three and six months ended June 30, 2018 , respectively, which were included within the calculation of diluted earnings per share for the three and six months ended June 30, 2018 . The 405,500 options outstanding from the 2017 option grant were not included for the three and six months ended June 30, 2018 dilutive earnings per share calculation, as to do so would be antidilutive. Refer to Note 12 — “Deferred Compensation Awards” for additional information regarding the option grants. As of June 30, 2017, the 300,000 options outstanding from the 2016 option grant provided 56,666 and 47,721 common share equivalents for the three and six months ended June 30, 2017, respectively, which were included within the calculation of diluted earnings per share for the three and six months ended June 30, 2017 . Refer to Note 12 — “Deferred Compensation Awards” for additional information regarding the option grants. Goodwill Goodwill represents the excess purchase price over the fair value of net tangible and identifiable intangible assets acquired through acquisitions. Goodwill is not amortized, it is instead tested for impairment annually, or more often, if circumstances indicate a possible impairment may exist. As required, we evaluate goodwill for impairment annually, and do so during the fourth quarter of each year using balances at November 1, and at an interim date if indications of impairment exist. When testing goodwill for impairment, we may assess qualitative factors, including macroeconomic conditions, industry and market considerations, overall financial performance, and entity specific events to determine whether it is more likely than not that the fair value of a operating and reportable segment is less than its carrying amount. We utilize internally developed discounted future cash flow models, third-party appraisals, or broker valuations to determine the fair value of the operating and reportable segment. Under the discounted cash flow approach, we utilize various assumptions requiring judgment, including projected future cash flows, discount rates, and capitalization rates. Our estimated future cash flows are based on historical data, internal estimates, and external sources. We then compare the estimated fair value to the carrying value. If the carrying value is in excess of the fair value, an impairment charge is recorded to asset impairments within our consolidated statement of operations in the amount by which the reporting unit's carrying value exceeds its fair value, limited to the carrying value of goodwill. Refer to Note 7 — "Goodwill and Intangible Assets" for additional information about goodwill. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which completes the joint effort between the FASB and International Accounting Standards Board to converge the recognition of revenue between the two boards. The new standard affects any entity using U.S. GAAP that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets not included within other FASB standards. The guiding principal of the new standard is that an entity should recognize revenue in an amount that reflects the consideration to which an entity expects to be entitled for the delivery of goods and services. ASU 2014-09 may be adopted using either of two acceptable methods: (1) retrospective adoption to each prior period presented with the option to elect certain practical expedients; or (2) adoption with the cumulative effect recognized at the date of initial application and providing certain disclosures. To assess at which time revenue should be recognized, an entity should use the following steps: (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when, or as, the entity satisfies a performance obligation. For public business entities, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within the reporting period. For private companies, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2018 and interim reporting periods beginning after December 15, 2019. Earlier application is allowed in certain circumstances. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The Company does not believe this update will have a material effect on the Company’s regulated revenue. The American Institute of Certified Public Accountant's Power and Utility Entities Revenue Recognition Task Force has stated that nonexchange transactions, such as CIAC, are not within the scope of Topic 606, and, therefore, those transactions or events will continue to be recognized in accordance with other topics. Additionally, the Company is assessing the impact of ASU 2014-09 with regard to recognition of revenue received under infrastructure coordination and financing agreements ("ICFAs") in connection with substantial completion of capital improvements that will increase the capacity of Palo Verde's wastewater reclamation facility. The Company is evaluating whether this update will have an impact on the recognition of ICFA revenue, which is recognized historically at the time wastewater capacity is completed to serve the property for which ICFA revenues were received. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 requires lessees to record a right-of-use asset and corresponding lease obligation for lease arrangements with a term of greater than twelve months. ASU 2016-02 requires additional disclosures about leasing arrangements and requires the use of the modified retrospective method, which will require adjustment to all comparative periods presented in the consolidated financial statements. This guidance will be effective for public companies for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. For all other entities, the guidance is effective for annual periods beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2020. The Company does not expect this update to have a material impact on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”). ASU 2016-09 identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. This guidance is effective for public companies for annual periods beginning after December 15, 2016 and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. The Company adopted this accounting standard in the third quarter of 2017 and the adoption did not have a material effect on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). ASU 2016-15 clarifies and provides specific guidance on eight cash flow classification issues that are not currently addressed by current U.S. GAAP and thereby reduce the current diversity in practice. This guidance is effective for public companies for annual periods beginning after December 15, 2017 and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018, and interim periods within annual periods beginning after December 15, 2019. Early adoption is permitted. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) Intra-Entity Transfers of Assets Other Than Inventory (“ASU 2016-16”). ASU 2016-16 instructs entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs (compared to current U.S. GAAP which prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party). The guidance is effective for public companies for annual periods beginning after December 15, 2017 and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018 and interim periods within annual periods beginning after December 15, 2019. Early adoption is permitted. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the FASB Emerging Issues Task Force) (“ASU 2016-18”). ASU 2016-18 requires amounts generally described as restricted cash and restricted cash equivalents to be included with cash and cash equivalents when reconciling the total beginning and ending amounts for the periods shown on the statement of cash flows. The guidance is effective for public companies for annual periods beginning after December 15, 2017, and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018 and interim periods within annual periods beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The guidance should be applied using a retrospective transition method for each period presented. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”). ASU 2017-01 provides a more robust framework to use in determining when a set of assets and activities is a business. Also, the amendments provide more consistency in applying the guidance, reducing the costs of application, and make the definition of a business more operable. The guidance is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018, and interim periods with annual periods beginning after December 15, 2019. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04") . ASU 2017-04 eliminates Step 2 from the impairment test which requires entities to determine the implied fair value of goodwill to measure if any impairment charge is necessary. Instead, entities will record impairment charges based on the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. For public companies, the provisions of ASU 2017-04 are to be applied on a retrospective basis and are effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. For all other entities, the guidance is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2021. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2022. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, Compensation - Stock Compensation (Topic 718) Improvements to Nonemployee Share-Based Payment Accounting (“ASU 2018-07”). ASU 2018-07 simplifies the accounting for share-based payments made to nonemployees so the accounting for such payments is substantially the same as those made to employees. Share based awards to nonemployees will be measured at fair value on the grant date of the awards, entities will need to assess the probability of satisfying performance conditions if any are present, and awards will continue to be classified according to Accounting Standards Codification 718 upon vesting which eliminates the need to reassess classification upon vesting, consistent with awards granted to employees. This guidance will be effective for public companies for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. For all other entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2020. Early adoption is permitted. The Company is currently assessing the impact that adopting this new standard will have on its consolidated financial statements.

Regulatory Decision and Related

Regulatory Decision and Related Accounting and Policy Changes	6 Months Ended
	Jun. 30, 2018
Regulated Operations [Abstract]
Regulatory Decision and Related Accounting and Policy Changes	REGULATORY DECISION AND RELATED ACCOUNTING AND POLICY CHANGES Our regulated utilities and certain other balances are subject to regulation by the ACC and meet the requirements for regulatory accounting found within ASC Topic 980, Regulated Operations . In accordance with ASC Topic 980, rates charged to utility customers are intended to recover the costs of the provision of service plus a reasonable return in the same period. Changes to the rates are made through formal rate applications with the ACC, which we have done for all of our operating utilities and which are described below. On July 9, 2012, we filed formal rate applications with the ACC to adjust the revenue requirements for seven utilities representing a collective rate increase of approximately 28% over 2011 revenue levels. In August 2013, the Company entered into a settlement agreement with ACC Staff, the Residential Utility Consumers Office, the City of Maricopa, and other parties to the rate case. The settlement required approval by the ACC’s Commissioners before it could take effect. In February 2014, the rate case proceedings were completed and the ACC issued Rate Decision No. 74364, effectively approving the settlement agreement. The rulings of the decision include, but are not limited to, the following: • For the Company’s utilities, adjusting for the condemnation of the operations and assets of Valencia and sale of Willow Valley Water Co., Inc. ("Willow Valley"), which occurred in 2015 and 2016, respectively, a collective revenue requirement increase of $3.6 million based on 2011 test year service connections, phased-in over time, with the first increase in January 2015 as follows (in thousands): Incremental Cumulative 2015 $ 1,083 $ 1,083 2016 887 1,970 2017 335 2,305 2018 335 2,640 2019 335 2,975 2020 335 3,310 2021 335 3,645 Whereas this phase-in of additional revenues was determined using a 2011 test year, to the extent that the number of active service connections increases from 2011 levels, the additional revenues may be greater than the amounts set forth above. On the other hand, if active connections decrease or we experience declining usage per customer, we may not realize all of the anticipated revenues. • Full reversal of the imputation of CIAC balances associated with funds previously received under ICFAs, as required in the Company’s last rate case. The reversal restored rate base or future rate base and had a significant impact of restoring shareholder equity on the balance sheet. • The Company has agreed to not enter into any new ICFAs. Existing ICFAs will remain in place, but a portion of future payments to be received under the ICFAs will be considered as hook-up fees, which are accounted for as CIAC once expended on plant. • A 9.5% return on common equity was adopted. The following provides additional discussion on accounting and policy changes resulting from Rate Decision No. 74364. Infrastructure Coordination and Financing Agreements – ICFAs are agreements with developers and homebuilders whereby GWRI, the indirect parent of the operating utilities, provides services to plan, coordinate, and finance the water and wastewater infrastructure that would otherwise be required to be performed or subcontracted by the developer or homebuilder. Under the ICFAs, GWRI has a contractual obligation to ensure physical capacity exists through its regulated utilities for water and wastewater to the landowner/developer when needed. This obligation persists regardless of connection growth. Fees for these services are typically a negotiated amount per equivalent dwelling unit for the specified development or portion of land. Payments are generally due in installments, with a portion due upon signing of the agreement, a portion due upon completion of certain milestones, and the final payment due upon final plat approval or sale of the subdivision. The payments are non-refundable. The agreements are generally recorded against the land and must be assumed in the event of a sale or transfer of the land. The regional planning and coordination of the infrastructure in the various service areas has been an important part of GWRI’s business model. Prior to January 1, 2010, GWRI accounted for funds received under ICFAs as revenue once the obligations specified in the ICFA were met. As these arrangements are with developers and not with the end water or wastewater customer, the timing of revenue recognition coincided with the completion of GWRI’s performance obligations under the agreement with the developer and with GWRI’s ability to provide fitted capacity for water and wastewater service through its regulated subsidiaries. The 2010 Regulatory Rate Decision No. 71878 established new rates for the recovery of reasonable costs incurred by the utilities and a return on invested capital. In determining the new annual revenue requirement, the ACC imputed a reduction to rate base for all amounts related to ICFA funds collected by the Company that the ACC deemed to be CIAC for rate making purposes. As a result of the decision by the ACC, GWRI changed its accounting policy for the accounting of ICFA funds. Effective January 1, 2010, GWRI recorded ICFA funds received as CIAC. Thereafter, the ICFA-related CIAC was amortized as a reduction of depreciation expense over the estimated depreciable life of the utility plant at the related utilities. With the issuance of Rate Decision No. 74364, in February 2014, the ACC again changed how ICFA funds would be characterized and accounted for going forward. Most notably, the ACC changed the rate treatment of ICFA funds, and ICFA funds already received would no longer be deemed CIAC for rate making purposes. In conjunction with Rate Decision No. 74364, we eliminated the CIAC liability and reversed the associated regulatory liability brought about by the 2010 ruling. ICFA funds already received or which had become due prior to the date of Rate Decision No. 74364 were accounted for in accordance with the Company’s ICFA revenue recognition policy that had been in place prior to the 2010 Regulatory Rate Decision, wherein the funds received are recognized as revenue once the obligations specified in the ICFA were met. Rate Decision No. 74364 prescribes that of the ICFA funds which come due and are paid subsequent to December 31, 2013, 70% of the ICFA funds will be recorded in the associated utility subsidiary as a hook-up fee (“HUF”) liability, with the remaining 30% to be recorded as deferred revenue, which the Company accounts for in accordance with the Company's ICFA revenue recognition policy. A HUF tariff, specifying the dollar value of a HUF for each utility, was approved by the ACC as part of Rate Decision No. 74364. The Company is responsible for assuring the full HUF value is paid from ICFA proceeds, and recorded in its full amount, even if it results in recording less than 30% of the ICFA fee as deferred revenue. The Company will account for the portion allocated to the HUF as a CIAC contribution. However, in accordance with the ACC directives the CIAC is not deducted from rate base until the HUF funds are expended for utility plant. Such funds will be segregated in a separate bank account and used for plant. A HUF liability will be established and will be amortized as a reduction of depreciation expense over the useful life of the related plant once the HUF funds are utilized for the construction of plant. For facilities required under a HUF or ICFA, the utilities must first use the HUF moneys received, after which, it may use debt or equity financing for the remainder of construction. The Company will record 30% of the funds received, up until the HUF liability is fully funded, as deferred revenue, which is to be recognized as revenue once the obligations specified within the ICFA are met, including construction of sufficient operating capacity to serve the customers for which revenue was deferred. As of June 30, 2018 and December 31, 2017, ICFA deferred revenue recorded on the consolidated balance sheet totaled $17.4 million and $19.7 million, respectively, which represents deferred revenue recorded for ICFA funds received on contracts that had become due prior to Rate Decision No. 74364. For ICFA contracts coming due after December 31, 2013, as funding is received 30% will be added to this balance with the remaining 70% recorded to a HUF liability, until the HUF liability is fully funded at which time any funding greater than the HUF liability will be recorded as deferred revenue. ICFA Revenue Recognition - The Company will recognize ICFA revenue when the following conditions are met: • the fee is fixed and determinable; • the cash received is nonrefundable; • capacity currently exists to serve the specific lots; and • there are no additional significant performance obligations. As of June 30, 2018 , the Company recognized $2.4 million of ICFA revenue which resulted from additional capacity added to a wastewater plant. Intangible assets / Regulatory liability – The Company previously recorded certain intangible assets related to ICFA contracts obtained in connection with our Santa Cruz, Palo Verde, and Sonoran acquisitions. The intangible assets represented the benefits to be received over time by virtue of having those contracts. Prior to January 1, 2010, the ICFA-related intangibles were amortized when ICFA funds were recognized as revenue. Effective January 1, 2010, in connection with the 2010 Regulatory Rate Decision, these assets became fully offset by a regulatory liability of $11.2 million since the imputation of ICFA funds as CIAC effectively resulted in the Company not being able to benefit (through rates) from the acquired ICFA contracts. Effective January 1, 2010, the gross ICFAs intangibles began to be amortized when cash was received in proportion to the amount of total cash expected to be received under the underlying agreements. However, such amortization expense was offset by a corresponding reduction of the regulatory liability in the same amount. As a result of Rate Decision No. 74364, the Company changed its policy around the ICFA related intangible assets. As discussed above, pursuant to Rate Decision No. 74364, approximately 70% of ICFA funds to be received in the future will be recorded as a HUF, until the HUF is fully funded at the Company’s applicable utility subsidiary. The remaining approximate 30% of future ICFA funds will be recorded at the parent company level and will be subject to the Company’s ICFA revenue recognition accounting policy. As the Company now expects to experience an economic benefit from the approximately 30% portion of future ICFA funds, 30% of the regulatory liability, or $3.4 million , was reversed in 2014. The remaining 70% of the regulatory liability, or $7.9 million , will continue to be recorded on the balance sheet. Subsequent to Rate Decision No. 74364, the intangible assets will continue to amortize when the corresponding ICFA funds are received in proportion to the amount of total cash expected to be received under the underlying agreements. The recognition of amortization expense will be partially offset by a corresponding reduction of the regulatory liability.

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PROPERTY, PLANT AND EQUIPMENT Property, plant, and equipment at June 30, 2018 and December 31, 2017 consist of the following (in thousands): June 30, 2018 December 31, 2017 Average Depreciation Life (in years) Mains/lines/sewers $ 119,366 $ 117,381 47 Plant 76,192 72,863 25 Equipment 30,544 29,904 10 Meters 13,005 12,693 12 Furniture, fixture and leasehold improvements 371 368 8 Computer and office equipment 603 720 5 Software 241 242 3 Land and land rights 891 861 Other 428 428 Construction work-in-process 45,923 53,591 Total property, plant and equipment 287,564 289,051 Less accumulated depreciation (74,830 ) (75,592 ) Net property, plant and equipment $ 212,734 $ 213,459

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Accounts Receivable	ACCOUNTS RECEIVABLE Accounts receivable as of June 30, 2018 and December 31, 2017 consist of the following (in thousands): June 30, 2018 December 31, 2017 Billed receivables $ 1,820 $ 1,691 Less allowance for doubtful accounts (115 ) (163 ) Accounts receivable – net $ 1,705 $ 1,528

Equity Method Investment

Equity Method Investment	6 Months Ended
	Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
EQUITY METHOD INVESTMENT	EQUITY METHOD INVESTMENT On June 5, 2013, the Company sold Global Water Management, LLC (“GWM”), a wholly-owned subsidiary of GWRI, that owned and operated the FATHOM Water Management Holdings, LLP ("FATHOM™") business. In connection with the sale of GWM, the Company made a $1.6 million investment in FATHOM™ (the "FATHOM™ investment”). This limited partnership investment is accounted for under the equity method due to the FATHOM™ investment being considered more than minor. In March 2017, FATHOM ™ completed a round of financing, wherein our ownership percentage was reduced from 8.0% to 7.1% on a fully diluted basis. In conjunction with the recapitalization, the Company's equity interest was adjusted in accordance with ASC 323, Investments-Equity Method and Joint Ventures, wherein we recorded a $243,000 gain for the six months ended June 30, 2017 . The adjustment to the carrying value of the FATHOM™ investment was calculated using our proportionate share of FATHOM™'s adjusted net equity. The gain was recorded within other income and expense in our consolidated statement of operations in the first quarter of 2017. The carrying value of the FATHOM™ investment consisted of a balance of $185,000 as of June 30, 2018 and $345,000 as of December 31, 2017 , and reflects our initial investment, the adjustments related to subsequent rounds of financing, and our proportionate share of FATHOM™'s cumulative earnings (losses). We evaluate the FATHOM™ investment for impairment whenever events or changes in circumstances indicate that the carrying value of the FATHOM™ investment may have experienced an “other-than-temporary” decline in value. Since the sale of GWM, the losses incurred on the FATHOM™ investment were greater than anticipated; however, based upon our evaluation of various relevant factors, including the most recent round of financing and the ability of FATHOM™ to achieve and sustain an earnings capacity that would justify the carrying amount of the FATHOM™ investment, we do not believe the FATHOM™ investment to be impaired as of June 30, 2018 . We have evaluated whether the FATHOM™ investment qualifies as a variable interest entity (“VIE”) pursuant to the accounting guidance of ASC 810, Consolidations . Considering the potential that the total equity investment in the FATHOM™ investment may not be sufficient to absorb the losses of the FATHOM™ investment, the Company currently views the FATHOM™ investment as a VIE. However, considering the Company’s minority interest and limited involvement with the FATHOM™ business, the Company is not required to consolidate FATHOM™. Rather, the Company has accounted for the FATHOM™ investment under the equity method.

Acquisitions (Notes)

Acquisitions (Notes)	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	ACQUISITIONS Acquisition of Turner On May 30, 2018 , the Company acquired all of the equity of Turner, a non-potable irrigation water utility in Mesa, Arizona, for total consideration of $2.8 million . This acquisition is consistent with the Company's declared strategy of making accretive acquisitions. At the time of acquisition, Turner had 963 residential irrigation connections and approximately seven square miles of service area. The acquisition was accounted for as a business combination under ASC Topic 805, "Business Combinations." The purchase price was allocated to the acquired utility assets and liabilities assumed based on the seller's book value at acquisition as the historical cost of these assets and liabilities will be the amounts that will continue to be reflected in customer rates. A preliminary purchase price allocation of the net assets acquired in the transaction is as follows (in thousands): Net assets acquired: Cash $ 176 Accounts receivable 121 Gross property, plant and equipment 4,495 Construction work-in-progress 92 Accumulated depreciation (3,751 ) Accounts payable (30 ) Accrued expenses (46 ) Total net assets assumed 1,057 Goodwill 1,743 Total purchase price $ 2,800 The revenue recognized post acquisition and the pro forma effect of the business acquired is not material to the company's financial position or results of operations.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	GOODWILL AND INTANGIBLE ASSETS Goodwill As of June 30, 2018 , the goodwill balance of $1.7 million related to the Turner acquisition. There were no indicators of impairment identified as a result of the Company's review of events and circumstances related to its goodwill subsequent to the acquisition. Refer to Note 6 — "Acquisitions" for additional information regarding the Turner acquisition. Intangible Assets As of June 30, 2018 and December 31, 2017 intangible assets consisted of the following (in thousands): June 30, 2018 December 31, 2017 Gross Amount Accumulated Amortization Net Amount Gross Amount Accumulated Amortization Net Amount INDEFINITE LIVED INTANGIBLE ASSETS: CP Water Certificate of Convenience & Necessity service area $ 1,532 $ — $ 1,532 $ 1,532 $ — $ 1,532 Intangible trademark 13 — 13 13 — 13 1,545 — 1,545 1,545 — 1,545 AMORTIZED INTANGIBLE ASSETS: Acquired ICFAs 17,978 (12,154 ) 5,824 17,978 (12,154 ) 5,824 Sonoran contract rights 7,406 (2,003 ) 5,403 7,406 (2,003 ) 5,403 25,384 (14,157 ) 11,227 25,384 (14,157 ) 11,227 Total intangible assets $ 26,929 $ (14,157 ) $ 12,772 $ 26,929 $ (14,157 ) $ 12,772 Acquired ICFAs and contract rights related to our 2005 acquisition of Sonoran Utility Services, LLC assets are amortized when cash is received in proportion to the amount of total cash expected to be received under the underlying agreements. Due to the uncertainty of the timing of when cash will be received under ICFA agreements and contract rights, we cannot reliably estimate when the remaining intangible assets' amortization will be recorded. No amortization was recorded for these balances for the three and six months ended June 30, 2018 and 2017 .

Transactions With Related Parti

Transactions With Related Parties	6 Months Ended
	Jun. 30, 2018
Related Party Transactions [Abstract]
Transactions With Related Parties	TRANSACTIONS WITH RELATED PARTIES The Company provides medical benefits to our employees through our participation in a pooled plan sponsored by an affiliate of a shareholder and director of the Company. Medical claims paid to the plan were approximately $149,000 and $14,000 for the three months ended June 30, 2018 and 2017 , respectively. Medical claims paid to the plan were approximately $211,000 and $104,000 for the six months ended June 30, 2018 and 2017 , respectively. As GWM was previously owned by the Company, it has historically provided billing, customer service, and other support services for the Company’s regulated utilities pursuant to a services agreement with GWM whereby the Company has agreed to use the FATHOM™ platform for all of its regulated utility services for an initial term of 10 years. The services agreement was amended on November 17, 2016, which extended the term of the contract through December 31, 2026 . As part of the amended agreement, the Company reduced the monthly rate per connection from $7.79 per water account/month to $6.24 per water account/month. Additionally, the scope of services was expanded to include a meter replacement program of approximately $11.4 million , wherein the Company replaced a majority of its meter infrastructure. As of June 30, 2018 , $10.7 million has been paid to GWM in connection with the meter exchange program. Amounts collected by GWM from the Company’s customers that GWM has not yet remitted to the Company are included within the “Due from affiliates” caption on the Company’s consolidated balance sheet. As of June 30, 2018 and December 31, 2017 , the unremitted balance totaled $404,000 and $430,000 , respectively. Based on current service connections, annual fees to be paid to GWM for FATHOM™ services will be approximately $1.5 million at a rate of $6.24 per water account/month. For the three months ended June 30, 2018 and 2017 , the Company incurred FATHOM™ service fees of approximately $404,000 and $365,000 . For the six months ended June 30, 2018 and 2017 , the Company incurred FATHOM™ service fees of approximately $760,000 and $725,000 , respectively. In addition, the Company entered into a services agreement with GWM whereby the Company has agreed to use the FATHOM™ platform for all of its regulated utility services for an initial term of 10 years. The services agreement was amended on November 17, 2016, which extended the term of the contract through December 31, 2026 . As part of the amended agreement, the Company reduced the monthly rate per connection from $7.79 per water account/month to $6.24 per water account/month. Additionally, the scope of services was expanded to include a meter replacement program of approximately $11.4 million , wherein the Company replaced a majority of its meter infrastructure. As of June 30, 2018 , $10.7 million has been paid to GWM in connection with the meter exchange program. The services agreement is automatically renewable for successive 10 -year periods, unless notice of termination is given prior to any renewal period. The services agreement may be terminated by either party for default only and the termination of the services agreement will also result in the termination of the royalty payments (described below) payable to the Company. Pursuant to the purchase agreement for the sale of GWM, the Company is entitled to quarterly royalty payments based on a percentage of certain of GWM’s recurring revenues for a 10 -year period, up to a maximum of $15.0 million . The Company made the election to record these quarterly royalty payments prospectively in income as the amounts are earned. Royalties recorded within other income totaled approximately $109,000 and $95,000 for the three months ended June 30, 2018 and 2017 , respectively, and $217,000 and $187,000 for the six months ended June 30, 2018 and 2017 , respectively.

Accrued Expenses

Accrued Expenses	6 Months Ended
	Jun. 30, 2018
Accrued Liabilities, Current [Abstract]
Accrued Expenses	ACCRUED EXPENSES Accrued expenses at June 30, 2018 and December 31, 2017 consist of the following (in thousands): June 30, 2018 December 31, 2017 Deferred compensation $ 2,048 $ 2,171 Property taxes 1,047 989 Meter replacement - related party 717 717 Interest 463 468 Dividend payable 466 464 Asset retirement obligation 427 427 Deferred phantom units eligible for exercise 448 — Other accrued liabilities 1,866 2,016 Total accrued expenses $ 7,482 $ 7,252

Debt

Debt	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Debt	DEBT The outstanding balances and maturity dates for short-term (including the current portion of long-term debt) and long-term debt as of June 30, 2018 and December 31, 2017 are as follows (in thousands): June 30, 2018 December 31, 2017 Short-term Long-term Short-term Long-term BONDS AND NOTES PAYABLE - 4.380% Series A 2016, maturing June 2028 $ — $ 28,750 $ — $ 28,750 4.580% Series B 2016, maturing June 2036 — 86,250 — 86,250 1.200% WIFA Loan, maturing October 2032 3 40 3 41 4.650% Harquahala Loan, maturing January 2021 5 12 5 15 8 115,052 8 115,056 OTHER Capital lease obligations 31 92 — — Debt issuance costs (672 ) — (693 ) Total debt $ 39 $ 114,472 $ 8 $ 114,363 2016 Senior Secured Notes On June 24, 2016, the Company issued two series of senior secured notes with an aggregate total principal balance of $115.0 million at a blended interest rate of 4.55% . Series A carries a principal balance of $28.8 million and bears an interest rate of 4.38% over a twelve -year term, with the principal payment due on June 15, 2028 . Series B carries a principal balance of $86.3 million and bears an interest rate of 4.58% over a 20 -year term. Series B is interest only for the first five years, with $1.9 million principal payments paid semiannually thereafter. The proceeds of the senior secured notes were primarily used to refinance the previously outstanding long-term tax exempt bonds, which were subject to an early redemption option at 103% , plus accrued interest, as a result of the initial public offering of our common stock in May 2016 (the "U.S. IPO"). As part of the refinancing of the long-term debt, the Company paid a prepayment penalty of $3.2 million and wrote off the remaining $2.2 million in capitalized loan fees related to the tax exempt bonds, which were recorded as additional interest expense in the second quarter of 2016. The senior secured notes are collateralized by a security interest in the Company’s equity interest in its subsidiaries, including all payments representing profits and qualifying distributions. Debt issuance costs as of June 30, 2018 and December 31, 2017 were $672,000 and $693,000 , respectively. The senior secured notes require the Company maintain a debt service coverage ratio of consolidated EBITDA to consolidated debt service of at least 1.10 to 1.00. Consolidated EBITDA is calculated as net income plus depreciation, taxes, interest and other non-cash charges net of non-cash income. Consolidated debt service is calculated as interest expense, principal payments, and dividend or stock repurchases. The senior secured notes also contain a provision limiting the payment of dividends if the Company falls below a debt service ratio of 1.25 . However, for the quarter ending June 30, 2021 through the quarter ending March 31, 2024, the ratio drops to 1.20 . As of June 30, 2018 , the Company was in compliance with its financial debt covenants. Eagletail Loans In May 2017, the Company acquired Eagletail. As part of the acquisition, the Company assumed two unsecured loans held by Eagletail. These loans are payable to the Water Infrastructure Finance Authority of Arizona ("WIFA") and Harquahala Valley Community Benefits Foundation ("Harquahala"). Refer to the table above for carrying balances as of June 30, 2018 . The WIFA loan bears an interest rate of 1.20% over a 20 -year term, while the Harquahala loan bears an interest rate of 4.65% over a 15 -year term. Revolving Credit Line On April 20, 2018, the Company entered into an agreement with MidFirst Bank, a federally chartered savings association, for a two-year revolving line of credit up to $8.0 million , set to expire on April 30, 2020 . The credit facility bears an interest rate of LIBOR plus 2.25% . As of June 30, 2018 , the Company had no outstanding borrowings under this credit line. Debt issuance costs as of June 30, 2018 and December 31, 2017 were $137,000 and $20,000 , respectively. The revolving credit line requires the Company maintain a debt service coverage ratio of consolidated EBITDA to consolidated debt service of at least 1.10 to 1.00. The revolving credit line also contains a provision limiting the payment of dividends if the Company falls below a debt service ratio of 1.25 . As of June 30, 2018 , the Company was in compliance with its financial debt covenant. At June 30, 2018 , the remaining aggregate annual maturities of debt and minimum lease payments under capital lease obligations for the years ended December 31 are as follows (in thousands): Debt Capital Lease Obligations Remaining six months of 2018 $ 4 $ 19 2019 8 37 2020 9 37 2021 1,922 37 2022 3,836 8 Thereafter 109,281 — Subtotal 115,060 138 Less: amount representing interest — (16 ) Total $ 115,060 $ 122 At June 30, 2018 , the outstanding principal value of the non-current portion of long-term debt was $115.1 million , with an estimated fair value of $111.3 million . At December 31, 2017 , the carrying value of the non-current portion of long-term debt was $115.1 million , with an estimated fair value of $115.7 million . The fair value of our debt was estimated based on interest rates considered available for instruments of similar terms and remaining maturities.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES During the three months ended June 30, 2018 , the Company recorded a tax expense of $766,000 on a pre-tax income of $3.0 million , compared to a tax expense of $291,000 on a pre-tax income of $716,000 for the three months ended June 30, 2017 . During the six months ended June 30, 2018 , the Company recorded a tax expense of $907,000 on pre-tax income of $3.5 million , compared to a tax expense of $461,000 on pre-tax income of $1.1 million for the six months ended June 30, 2017 . The income tax provision was computed based on the Company’s estimated effective tax rate, reflective of the TCJA new federal rates beginning January 1, 2018, and forecasted income expected for the full year, including the impact of any unusual, infrequent, or non-recurring items.

Deferred Compensation Awards

Deferred Compensation Awards	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Deferred Compensation Awards	DEFERRED COMPENSATION AWARDS Stock-based compensation Stock-based compensation related to option awards is measured based on the fair value of the award. The fair value of stock option awards is determined using a Black-Scholes option-pricing model. We recognize compensation expense associated with the options over the vesting period. 2016 stock option grant In May 2016, GWRI’s Board of Directors granted stock options to acquire 325,000 shares of GWRI’s common stock to the members of the board. The options were granted with an exercise price of $7.50 , the market price of the Company’s common shares on the NASDAQ Global Market at the close of business on May 20, 2016. The options vested over a two -year period, with 50% having vested in May 2017 and 50% having vested in May 2018. The options have a three -year life. The Company expensed the $348,000 fair value of the stock option grant ratably over the two -year vesting period in accordance with ASC 323. Stock-based compensation expense of $24,000 and $43,000 was recorded for the three months ended June 30, 2018 and 2017, respectively, and $68,000 and $87,000 was recorded for the six months ended June 30, 2018 and 2017, respectively . As of June 30, 2018 , 175,000 options have been exercised with 150,000 outstanding. Of the 175,000 options exercised, 25,000 shares were exercised utilizing a cashless exercise, which resulted in an increase in shares outstanding of 4,327 and a cash equivalent of 20,673 shares recorded to treasury stock. 2017 stock option grant In August 2017, GWRI's Board of Directors granted stock options to acquire 465,000 shares of GWRI's common stock to employees throughout the Company. The options were granted with an exercise price of $9.40 , the market price of the Company's common shares on the NASDAQ Global Market at the close of business on August 10, 2017. The options vest over a four -year period, with 25% vesting in August 2018, 25% vesting in August 2019, 25% vesting in August 2020, and 25% vesting in August 2021. The options have a 10 -year life. The Company will expense the $1.1 million fair value of the stock option grant ratably over the four -year vesting period in accordance with ASC 323. Stock-based compensation expense of $67,000 was recorded for the three months ended June 30, 2018 and $121,000 was recorded for the six months ended June 30, 2018. As of June 30, 2018 , 54,900 options have been forfeited with 405,500 outstanding. Phantom stock compensation On December 30, 2010, we adopted a phantom stock unit plan authorizing the directors of the Company to issue phantom stock units (‘‘PSUs’’) to our employees. Following the consummation of the Reorganization Transaction, the awarded PSUs have been amended such that the outstanding units track the value of GWRI’s share price. The vesting of the awards has not changed. The PSUs give rise to a right of the holder to receive a cash payment the value of which, on a particular date, is the market value of the equivalent number of shares of GWRI at that date. The issuance of PSUs as a core component of employee compensation was intended to strengthen the alignment of interests between the employees of the Company and the shareholders of GWRI by linking their holdings and a portion of their compensation to the future value of the common shares of GWRI. PSUs are accounted for as liability compensatory awards under ASC 710, Compensation – General , rather than as equity awards. PSU awards are remeasured each period and a liability is recorded equal to GRWI’s closing share price as of the balance sheet date multiplied by the number of units vested and outstanding. The value of the benefits is recorded as an expense in the Company’s financial statements over the related vesting period. Vesting occurs ratably over 12 consecutive quarters beginning in the period granted. The following table details total awards granted and the number of units outstanding as of June 30, 2018 along with the amounts paid to holders of the PSUs for the three and six months ended June 30, 2018 and 2017 (in thousands, except unit amounts): Amounts Paid For the Three Months Ended June 30, Amounts Paid For the Six Months Ended June 30, Grant Date Units Granted Units Outstanding 2018 2017 2018 2017 Q1 2014 8,775 — $ — $ — $ — $ 3 Q1 2015 28,828 — — 21 22 43 Q1 2016 34,830 8,708 26 25 53 52 Q1 2017 22,712 13,249 17 16 34 16 Q1 2018 30,907 28,331 23 — 23 — Total 126,052 50,288 $ 66 $ 62 $ 132 $ 114 Stock appreciation rights compensation Beginning January 2012, in an effort to reward employees for their performance, the Company adopted a stock appreciation rights plan authorizing the directors of the Company to issue stock appreciation rights (“SARs”) to our employees. Following the consummation of the Reorganization Transaction, the value of the SARs issued under the plan track the performance of GWRI’s shares. Each holder has the right to receive a cash payment amounting to the difference between the exercise price and the closing price of GWRI’s common shares on the exercise date, provided that the closing price is in excess of the exercise price. Holders of SARs may exercise their awards once vested. Individuals who voluntarily or involuntarily leave the Company forfeit their rights under the awards. The following table details the recipients of the SARs awards, the grant date, units granted, exercise price, outstanding shares as of June 30, 2018 and amounts paid during the three and six months ended June 30, 2018 and 2017 (in thousands, except unit and per unit amounts): Amounts Paid For the Three Months Ended June 30, Amounts Paid For the Six Months Ended June 30, Recipients Grant Date Units Granted Exercise Price Units Outstanding 2018 2017 2018 2017 Key Executive (1)(3) Q3 2013 100,000 $ 1.59 — $ — $ 185 $ 166 $ 366 Key Executive (1)(4) Q4 2013 100,000 $ 2.69 — — 158 183 312 Members of Management (1)(5) Q1 2015 299,000 $ 4.26 183,000 — — — — Key Executives (2)(6) Q2 2015 300,000 $ 5.13 300,000 — — — — Members of Management (1)(7) Q3 2017 103,000 $ 9.40 103,000 — — — — Members of Management (1)(8) Q1 2018 33,000 $ 8.99 33,000 — — — — Total 935,000 619,000 $ — $ 343 $ 349 $ 678 (1) The SARs vest ratably over sixteen quarters from the grant date. (2) The SARs vest over sixteen quarters, vesting 20% per year for the first three years, with the remainder, 40%, vesting in year four. (3) The exercise price was determined by taking the weighted average GWRC share price of the five days prior to the grant date of July 1, 2013. (4) The exercise price was determined by taking the weighted average GWRC share price of the 30 days prior to the grant date of November 14, 2013. (5) The exercise price was determined to be the fair market value of one share of GWRC stock on the grant date of February 11, 2015. (6) The exercise price was determined to be the fair market value of one share of GWRC stock on the grant date of May 8, 2015. (7) The exercise price was determined to be the fair market value of one share of GWRI stock on the grant date of August 10, 2017. (8) The exercise price was determined to be the fair market value of one share of GWRI stock on the grant date of March 12, 2018. As a result of the merger of GWRC into the Company and the U.S. IPO, the exercise prices for the preceding awards granted prior to the merger were translated to U.S. dollars using the prevailing noon-day Bank of Canada foreign exchange rate of US$0.7969 per CAD $1.00 as measured on May 2, 2016, the day prior to the closing of the merger. The vesting of the awards has not changed. Subsequent to the merger, each SAR provides the holder the right to receive a cash payment amounting to the difference between the per share exercise price and the closing price of GWRI’s common shares on the exercise date, provided that the closing price is in excess of exercise price per share. For the three months ended June 30, 2018 and 2017 , the Company recorded approximately $450,000 and $689,000 of compensation expense related to the PSUs and SARs, respectively. For the six months ended June 30, 2018 and 2017 , the Company recorded approximately $362,000 and $865,000 of compensation expense related to the PSUs and SARs, respectively. Based on GWRI’s closing share price on June 29, 2018 (the last trading date of the quarter), deferred compensation expense to be recognized over future periods is estimated for the years ending December 31 as follows (in thousands): PSUs SARs Remaining six months of 2018 $ 141 $ 464 2019 $ 172 $ 236 2020 99 91 2021 — 74 2022 — 6 Total $ 412 $ 871

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	6 Months Ended
	Jun. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	SUPPLEMENTAL CASH FLOW INFORMATION The following is supplemental cash flow information for the six months ended June 30, 2018 and 2017 (in thousands): For the Six Months Ended June 30, 2018 2017 Supplemental cash flow information: Cash paid for interest $ 2,609 $ 2,613 Cash paid for GWRC tax liability $ — $ 125 Non-cash financing and investing activities: Capital expenditures included in accounts payable and accrued liabilities $ 763 $ 2,330 Equity method investment gain on recapitalization of FATHOM™ $ — $ 243

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Commitments Prior to the sale of GWM, we leased certain office space in Arizona under operating leases with terms that expired in February 2016. The operating lease agreements were between GWM and the landlord. Accordingly, effective June 2013 through February 2016, the Company was not a party under the lease agreements. GWRI subleased a portion of the office space covered under the GWM lease agreements. In February 2016, the Company entered into a three -year lease agreement with the landlord to occupy the same space previously subleased under GWM's lease agreements, inclusive of necessary facility upgrades. Beginning in March 2016, the Company began recording approximately $8,000 in monthly rent expense related to the new agreement. Rent expense arising from the operating leases totaled approximately $25,000 and $24,000 for the three months ended June 30, 2018 and 2017 , respectively, and $49,000 for each of the six months ended June 30, 2018 and 2017 . Contingencies From time to time, in the ordinary course of business, the Company may be subject to pending or threatened lawsuits in which claims for monetary damages are asserted. Management is not aware of any legal proceeding of which the ultimate resolution could materially affect our financial position, results of operations, or cash flows.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENTS Common Stock Offering On July 20, 2018, the Company completed a public offering of 1,720,000 shares of common stock at a price of $9.25 per share, which includes 220,000 shares issued and sold to the underwriter who exercised in full its option to purchase additional shares. The Company received net proceeds of approximately $14.7 million after deducting underwriting discounts and commissions and estimated offering expenses payable by the Company.

Description of Business, Basi23

Description of Business, Basis of Presentation, Corporate Transactions, Significant Accounting Policies, and Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The condensed consolidated financial statements of Global Water Resources, Inc. (the “Company”, “GWRI”, “we”, “us”, or “our”) and related disclosures as of June 30, 2018 and for the three and six months ended June 30, 2018 and 2017 are unaudited. The December 31, 2017 condensed consolidated balance sheet data was derived from the Company’s audited consolidated financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These financial statements follow the same accounting policies and methods of their application as the Company’s most recent annual consolidated financial statements. These financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2017 . In our opinion, these financial statements include all normal and recurring adjustments necessary for the fair statement of the results for the interim period. The results of operations for the three and six months ended June 30, 2018 are not necessarily indicative of the results to be expected for the full year, due to the seasonality of our business. The Company prepares its financial statements in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC"). The preparation of the financial statements in conformity with U.S. 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 income and expenses during the reporting period. Actual results could differ from those estimates. The U.S. dollar is the Company’s reporting currency and functional currency. The Company qualifies as an “emerging growth company”, as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), under the rules and regulations of the SEC. An emerging growth company may take advantage of specified reduced reporting and other requirements that are otherwise applicable generally to public companies. The Company elected to take advantage of these provisions for up to five years or such earlier time that the Company is no longer an emerging growth company. The Company has elected to take advantage of some of the reduced disclosure obligations regarding financial statements. Also, as an emerging growth company the Company can elect to delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. The Company has chosen to take advantage of this extended accounting transition provision.
Basic and Diluted Earnings per Common Share	Basic and Diluted Earnings per Common Share As of June 30, 2018 , the Company had 555,500 options outstanding to acquire shares of the Company's common stock. The 150,000 options outstanding from the 2016 option grant provide 42,777 and 41,022 common share equivalents for the three and six months ended June 30, 2018 , respectively, which were included within the calculation of diluted earnings per share for the three and six months ended June 30, 2018 . The 405,500 options outstanding from the 2017 option grant were not included for the three and six months ended June 30, 2018 dilutive earnings per share calculation, as to do so would be antidilutive. Refer to Note 12 — “Deferred Compensation Awards” for additional information regarding the option grants. As of June 30, 2017, the 300,000 options outstanding from the 2016 option grant provided 56,666 and 47,721 common share equivalents for the three and six months ended June 30, 2017, respectively, which were included within the calculation of diluted earnings per share for the three and six months ended June 30, 2017 . Refer to Note 12 — “Deferred Compensation Awards” for additional information regarding the option grants.
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill Goodwill represents the excess purchase price over the fair value of net tangible and identifiable intangible assets acquired through acquisitions. Goodwill is not amortized, it is instead tested for impairment annually, or more often, if circumstances indicate a possible impairment may exist. As required, we evaluate goodwill for impairment annually, and do so during the fourth quarter of each year using balances at November 1, and at an interim date if indications of impairment exist. When testing goodwill for impairment, we may assess qualitative factors, including macroeconomic conditions, industry and market considerations, overall financial performance, and entity specific events to determine whether it is more likely than not that the fair value of a operating and reportable segment is less than its carrying amount. We utilize internally developed discounted future cash flow models, third-party appraisals, or broker valuations to determine the fair value of the operating and reportable segment. Under the discounted cash flow approach, we utilize various assumptions requiring judgment, including projected future cash flows, discount rates, and capitalization rates. Our estimated future cash flows are based on historical data, internal estimates, and external sources. We then compare the estimated fair value to the carrying value. If the carrying value is in excess of the fair value, an impairment charge is recorded to asset impairments within our consolidated statement of operations in the amount by which the reporting unit's carrying value exceeds its fair value, limited to the carrying value of goodwill. Refer to Note 7 — "Goodwill and Intangible Assets" for additional information about goodwill.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which completes the joint effort between the FASB and International Accounting Standards Board to converge the recognition of revenue between the two boards. The new standard affects any entity using U.S. GAAP that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets not included within other FASB standards. The guiding principal of the new standard is that an entity should recognize revenue in an amount that reflects the consideration to which an entity expects to be entitled for the delivery of goods and services. ASU 2014-09 may be adopted using either of two acceptable methods: (1) retrospective adoption to each prior period presented with the option to elect certain practical expedients; or (2) adoption with the cumulative effect recognized at the date of initial application and providing certain disclosures. To assess at which time revenue should be recognized, an entity should use the following steps: (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when, or as, the entity satisfies a performance obligation. For public business entities, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within the reporting period. For private companies, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2018 and interim reporting periods beginning after December 15, 2019. Earlier application is allowed in certain circumstances. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The Company does not believe this update will have a material effect on the Company’s regulated revenue. The American Institute of Certified Public Accountant's Power and Utility Entities Revenue Recognition Task Force has stated that nonexchange transactions, such as CIAC, are not within the scope of Topic 606, and, therefore, those transactions or events will continue to be recognized in accordance with other topics. Additionally, the Company is assessing the impact of ASU 2014-09 with regard to recognition of revenue received under infrastructure coordination and financing agreements ("ICFAs") in connection with substantial completion of capital improvements that will increase the capacity of Palo Verde's wastewater reclamation facility. The Company is evaluating whether this update will have an impact on the recognition of ICFA revenue, which is recognized historically at the time wastewater capacity is completed to serve the property for which ICFA revenues were received. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 requires lessees to record a right-of-use asset and corresponding lease obligation for lease arrangements with a term of greater than twelve months. ASU 2016-02 requires additional disclosures about leasing arrangements and requires the use of the modified retrospective method, which will require adjustment to all comparative periods presented in the consolidated financial statements. This guidance will be effective for public companies for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. For all other entities, the guidance is effective for annual periods beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2020. The Company does not expect this update to have a material impact on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”). ASU 2016-09 identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. This guidance is effective for public companies for annual periods beginning after December 15, 2016 and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. The Company adopted this accounting standard in the third quarter of 2017 and the adoption did not have a material effect on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). ASU 2016-15 clarifies and provides specific guidance on eight cash flow classification issues that are not currently addressed by current U.S. GAAP and thereby reduce the current diversity in practice. This guidance is effective for public companies for annual periods beginning after December 15, 2017 and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018, and interim periods within annual periods beginning after December 15, 2019. Early adoption is permitted. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) Intra-Entity Transfers of Assets Other Than Inventory (“ASU 2016-16”). ASU 2016-16 instructs entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs (compared to current U.S. GAAP which prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party). The guidance is effective for public companies for annual periods beginning after December 15, 2017 and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018 and interim periods within annual periods beginning after December 15, 2019. Early adoption is permitted. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the FASB Emerging Issues Task Force) (“ASU 2016-18”). ASU 2016-18 requires amounts generally described as restricted cash and restricted cash equivalents to be included with cash and cash equivalents when reconciling the total beginning and ending amounts for the periods shown on the statement of cash flows. The guidance is effective for public companies for annual periods beginning after December 15, 2017, and interim periods within those annual periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018 and interim periods within annual periods beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The guidance should be applied using a retrospective transition method for each period presented. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”). ASU 2017-01 provides a more robust framework to use in determining when a set of assets and activities is a business. Also, the amendments provide more consistency in applying the guidance, reducing the costs of application, and make the definition of a business more operable. The guidance is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those periods. For all other entities, the guidance is effective for annual periods beginning after December 15, 2018, and interim periods with annual periods beginning after December 15, 2019. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2019. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment ("ASU 2017-04") . ASU 2017-04 eliminates Step 2 from the impairment test which requires entities to determine the implied fair value of goodwill to measure if any impairment charge is necessary. Instead, entities will record impairment charges based on the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. For public companies, the provisions of ASU 2017-04 are to be applied on a retrospective basis and are effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. For all other entities, the guidance is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2021. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2022. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, Compensation - Stock Compensation (Topic 718) Improvements to Nonemployee Share-Based Payment Accounting (“ASU 2018-07”). ASU 2018-07 simplifies the accounting for share-based payments made to nonemployees so the accounting for such payments is substantially the same as those made to employees. Share based awards to nonemployees will be measured at fair value on the grant date of the awards, entities will need to assess the probability of satisfying performance conditions if any are present, and awards will continue to be classified according to Accounting Standards Codification 718 upon vesting which eliminates the need to reassess classification upon vesting, consistent with awards granted to employees. This guidance will be effective for public companies for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. For all other entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Due to qualifying as an emerging growth company, the Company is required to adopt the ASU on January 1, 2020. Early adoption is permitted. The Company is currently assessing the impact that adopting this new standard will have on its consolidated financial statements.

Regulatory Decision and Relat24

Regulatory Decision and Related Accounting and Policy Changes (Tables)	6 Months Ended
	Jun. 30, 2018
Regulated Operations [Abstract]
Summary of Collective Revenue Requirement Phased-in Over Time	For the Company’s utilities, adjusting for the condemnation of the operations and assets of Valencia and sale of Willow Valley Water Co., Inc. ("Willow Valley"), which occurred in 2015 and 2016, respectively, a collective revenue requirement increase of $3.6 million based on 2011 test year service connections, phased-in over time, with the first increase in January 2015 as follows (in thousands): Incremental Cumulative 2015 $ 1,083 $ 1,083 2016 887 1,970 2017 335 2,305 2018 335 2,640 2019 335 2,975 2020 335 3,310 2021 335 3,645

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant, and equipment at June 30, 2018 and December 31, 2017 consist of the following (in thousands): June 30, 2018 December 31, 2017 Average Depreciation Life (in years) Mains/lines/sewers $ 119,366 $ 117,381 47 Plant 76,192 72,863 25 Equipment 30,544 29,904 10 Meters 13,005 12,693 12 Furniture, fixture and leasehold improvements 371 368 8 Computer and office equipment 603 720 5 Software 241 242 3 Land and land rights 891 861 Other 428 428 Construction work-in-process 45,923 53,591 Total property, plant and equipment 287,564 289,051 Less accumulated depreciation (74,830 ) (75,592 ) Net property, plant and equipment $ 212,734 $ 213,459

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Summary of Accounts Receivable	Accounts receivable as of June 30, 2018 and December 31, 2017 consist of the following (in thousands): June 30, 2018 December 31, 2017 Billed receivables $ 1,820 $ 1,691 Less allowance for doubtful accounts (115 ) (163 ) Accounts receivable – net $ 1,705 $ 1,528

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2018
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	A preliminary purchase price allocation of the net assets acquired in the transaction is as follows (in thousands): Net assets acquired: Cash $ 176 Accounts receivable 121 Gross property, plant and equipment 4,495 Construction work-in-progress 92 Accumulated depreciation (3,751 ) Accounts payable (30 ) Accrued expenses (46 ) Total net assets assumed 1,057 Goodwill 1,743 Total purchase price $ 2,800

Goodwill & Intangible Assets (T

Goodwill & Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	As of June 30, 2018 and December 31, 2017 intangible assets consisted of the following (in thousands): June 30, 2018 December 31, 2017 Gross Amount Accumulated Amortization Net Amount Gross Amount Accumulated Amortization Net Amount INDEFINITE LIVED INTANGIBLE ASSETS: CP Water Certificate of Convenience & Necessity service area $ 1,532 $ — $ 1,532 $ 1,532 $ — $ 1,532 Intangible trademark 13 — 13 13 — 13 1,545 — 1,545 1,545 — 1,545 AMORTIZED INTANGIBLE ASSETS: Acquired ICFAs 17,978 (12,154 ) 5,824 17,978 (12,154 ) 5,824 Sonoran contract rights 7,406 (2,003 ) 5,403 7,406 (2,003 ) 5,403 25,384 (14,157 ) 11,227 25,384 (14,157 ) 11,227 Total intangible assets $ 26,929 $ (14,157 ) $ 12,772 $ 26,929 $ (14,157 ) $ 12,772

Accrued Expenses (Tables)

Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2018
Accrued Liabilities, Current [Abstract]
Schedule of Accrued Expenses	Accrued expenses at June 30, 2018 and December 31, 2017 consist of the following (in thousands): June 30, 2018 December 31, 2017 Deferred compensation $ 2,048 $ 2,171 Property taxes 1,047 989 Meter replacement - related party 717 717 Interest 463 468 Dividend payable 466 464 Asset retirement obligation 427 427 Deferred phantom units eligible for exercise 448 — Other accrued liabilities 1,866 2,016 Total accrued expenses $ 7,482 $ 7,252

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Schedule of Outstanding Balances and Maturity Dates for Short Term and Long Term Debt	The outstanding balances and maturity dates for short-term (including the current portion of long-term debt) and long-term debt as of June 30, 2018 and December 31, 2017 are as follows (in thousands): June 30, 2018 December 31, 2017 Short-term Long-term Short-term Long-term BONDS AND NOTES PAYABLE - 4.380% Series A 2016, maturing June 2028 $ — $ 28,750 $ — $ 28,750 4.580% Series B 2016, maturing June 2036 — 86,250 — 86,250 1.200% WIFA Loan, maturing October 2032 3 40 3 41 4.650% Harquahala Loan, maturing January 2021 5 12 5 15 8 115,052 8 115,056 OTHER Capital lease obligations 31 92 — — Debt issuance costs (672 ) — (693 ) Total debt $ 39 $ 114,472 $ 8 $ 114,363
Schedule of Aggregate Annual Maturities of Debt And Minimum Lease Payments Under Capital Lease Obligations	At June 30, 2018 , the remaining aggregate annual maturities of debt and minimum lease payments under capital lease obligations for the years ended December 31 are as follows (in thousands): Debt Capital Lease Obligations Remaining six months of 2018 $ 4 $ 19 2019 8 37 2020 9 37 2021 1,922 37 2022 3,836 8 Thereafter 109,281 — Subtotal 115,060 138 Less: amount representing interest — (16 ) Total $ 115,060 $ 122

Deferred Compensation Awards (T

Deferred Compensation Awards (Tables)	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Total Awards Granted, Number of Units Outstanding and Amounts Paid to PSU Holders	The following table details total awards granted and the number of units outstanding as of June 30, 2018 along with the amounts paid to holders of the PSUs for the three and six months ended June 30, 2018 and 2017 (in thousands, except unit amounts): Amounts Paid For the Three Months Ended June 30, Amounts Paid For the Six Months Ended June 30, Grant Date Units Granted Units Outstanding 2018 2017 2018 2017 Q1 2014 8,775 — $ — $ — $ — $ 3 Q1 2015 28,828 — — 21 22 43 Q1 2016 34,830 8,708 26 25 53 52 Q1 2017 22,712 13,249 17 16 34 16 Q1 2018 30,907 28,331 23 — 23 — Total 126,052 50,288 $ 66 $ 62 $ 132 $ 114
Schedule of Recipients of SARs Awards, Grant Date, Units Granted, Exercise Price, Outstanding Shares and Amounts Paid	The following table details the recipients of the SARs awards, the grant date, units granted, exercise price, outstanding shares as of June 30, 2018 and amounts paid during the three and six months ended June 30, 2018 and 2017 (in thousands, except unit and per unit amounts): Amounts Paid For the Three Months Ended June 30, Amounts Paid For the Six Months Ended June 30, Recipients Grant Date Units Granted Exercise Price Units Outstanding 2018 2017 2018 2017 Key Executive (1)(3) Q3 2013 100,000 $ 1.59 — $ — $ 185 $ 166 $ 366 Key Executive (1)(4) Q4 2013 100,000 $ 2.69 — — 158 183 312 Members of Management (1)(5) Q1 2015 299,000 $ 4.26 183,000 — — — — Key Executives (2)(6) Q2 2015 300,000 $ 5.13 300,000 — — — — Members of Management (1)(7) Q3 2017 103,000 $ 9.40 103,000 — — — — Members of Management (1)(8) Q1 2018 33,000 $ 8.99 33,000 — — — — Total 935,000 619,000 $ — $ 343 $ 349 $ 678 (1) The SARs vest ratably over sixteen quarters from the grant date. (2) The SARs vest over sixteen quarters, vesting 20% per year for the first three years, with the remainder, 40%, vesting in year four. (3) The exercise price was determined by taking the weighted average GWRC share price of the five days prior to the grant date of July 1, 2013. (4) The exercise price was determined by taking the weighted average GWRC share price of the 30 days prior to the grant date of November 14, 2013. (5) The exercise price was determined to be the fair market value of one share of GWRC stock on the grant date of February 11, 2015. (6) The exercise price was determined to be the fair market value of one share of GWRC stock on the grant date of May 8, 2015. (7) The exercise price was determined to be the fair market value of one share of GWRI stock on the grant date of August 10, 2017. (8) The exercise price was determined to be the fair market value of one share of GWRI stock on the grant date of March 12, 2018.
Schedule of Estimated Future Compensation Expense	Based on GWRI’s closing share price on June 29, 2018 (the last trading date of the quarter), deferred compensation expense to be recognized over future periods is estimated for the years ending December 31 as follows (in thousands): PSUs SARs Remaining six months of 2018 $ 141 $ 464 2019 $ 172 $ 236 2020 99 91 2021 — 74 2022 — 6 Total $ 412 $ 871

Supplemental Cash Flow Inform32

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jun. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Schedule of Supplemental Cash Flow Information	The following is supplemental cash flow information for the six months ended June 30, 2018 and 2017 (in thousands): For the Six Months Ended June 30, 2018 2017 Supplemental cash flow information: Cash paid for interest $ 2,609 $ 2,613 Cash paid for GWRC tax liability $ — $ 125 Non-cash financing and investing activities: Capital expenditures included in accounts payable and accrued liabilities $ 763 $ 2,330 Equity method investment gain on recapitalization of FATHOM™ $ — $ 243

Description of Business, Basi33

Description of Business, Basis of Presentation, Corporate Transactions, Significant Accounting Policies, and Recent Accounting Pronouncements - Corporate Transactions (Details)

Dec. 31, 2034

May 30, 2018USD ($)

May 15, 2017USD ($)mi²active_water_connection

Jun. 02, 2016USD ($)

Jul. 14, 2015USD ($)

Apr. 30, 2015USD ($)

Sep. 30, 2013USD ($)

Jun. 30, 2018USD ($)

Jun. 30, 2017USD ($)

Jun. 30, 2018USD ($)

Jun. 30, 2017USD ($)

Dec. 31, 2014USD ($)

Dec. 31, 2017USD ($)

May 03, 2016USD ($)

Property, Plant and Equipment [Line Items]

Gross amount to be received from transfer of project agreement

$ 4,100,000

Proceeds from transfer of project agreement

$ 296,000

$ 2,800,000

Other income (expense)

$ 154,000

$ 336,000

$ 477,000

$ 688,000

Remaining proceeds from transfer of project agreement

1,000,000

Payments to Acquire Businesses, Gross

$ 2,800,000

Transfer of Project Agreement

Property, Plant and Equipment [Line Items]

Other income (expense)

$ 3,300,000

Eagletail Water Company

Property, Plant and Equipment [Line Items]

Active water connections | active_water_connection

55

Area of certificated service areas | mi²

8

Business combination, consideration transferred

$ 80,000

Business combination, assets acquired

80,000

Business combination, liabilities assumed

$ 78,000

GWR Global Water Resources Corp

Property, Plant and Equipment [Line Items]

Business combination, tax liability

$ 1,400,000

Valencia Water Company

Property, Plant and Equipment [Line Items]

Proceeds from the condemnation of Valencia

$ 55,000,000

Proceeds From Additional Working Capital Adjustments

$ 108,000

Growth Premium Receivable For Each New Water Meter Installed

3,000

3,000

Period For Maximum Payout Of Growth Premium Receivable

20 years

Maximum Payout Of Growth Premium Receivable Expiration Date

Dec. 31, 2034

Maximum Payout Of Growth Premium Receivable

45,000,000

45,000,000

Deferred tax liabilities, gross

4,700,000

4,700,000

Private Letter Ruling

Property, Plant and Equipment [Line Items]

Gain on condemnation of Valencia

$ 19,400,000

Tax Cuts and Jobs Act

Property, Plant and Equipment [Line Items]

Regulatory assets

1,900,000

1,900,000

$ 1,900,000

Tax Cuts and Jobs Act

Property, Plant and Equipment [Line Items]

Regulatory liabilities

600,000

600,000

$ 600,000

Tax Cuts and Jobs Act | Maximum

Property, Plant and Equipment [Line Items]

Tax Reform Revenue Reduction

$ 1,100,000

$ 1,100,000

Description of Business, Basi34

Description of Business, Basis of Presentation, Corporate Transactions, Significant Accounting Policies, and Recent Accounting Pronouncements - Significant Accounting Policies (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of options outstanding, to acquire shares of GWRI common stock (in shares)	555,500	300,000	555,500	300,000
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)			405,500
2016 stock option grant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of options outstanding, to acquire shares of GWRI common stock (in shares)	150,000		150,000
Common share equivalents included in diluted earnings per share (in shares)	42,777	56,666	41,022	47,721

Regulatory Decision and Relat35

Regulatory Decision and Related Accounting and Policy Changes - Additional Information (Details) $ in Thousands	Jul. 09, 2012utility	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2010USD ($)
Public Utilities, General Disclosures [Line Items]
Number of utilities to adjust revenue requirement | utility	7
Requested collective rate of increase over revenue	28.00%
Approved collective revenue increase				$ 3,600
Adopted rate of return on common equity				9.50%
Percentage of hook up fee liability to be recorded on ICFA receipts				70.00%
Revenues		$ 10,838	$ 8,145	$ 18,263	$ 14,936
Percentage of deferred revenue to be recorded on ICFA receipts				30.00%
ICFA fee as deferred revenue				The Company is responsible for assuring the full HUF value is paid from ICFA proceeds, and recorded in its full amount, even if it results in recording less than 30% of the ICFA fee as deferred revenue.
Deferred revenue - ICFA		17,358		$ 17,358			$ 19,746
Intangible assets offset by regulatory liability								$ 11,200
Percentage of regulatory liability				70.00%
Percentage reversal of regulatory liability						30.00%
Reversal of regulatory liability						$ 3,400
Regulatory liability		8,800		$ 8,800			8,500
Regulatory asset		1,900		1,900			1,900
ICFA
Public Utilities, General Disclosures [Line Items]
Revenues				2,400
Deferred revenue - ICFA		17,400		17,400			$ 19,700
Regulatory liability		$ 7,900		$ 7,900

Regulatory Decision and Relat36

Regulatory Decision and Related Accounting and Policy Changes - Summary of Collective Revenue Requirement Phased-in Over Time (Details) $ in Thousands	Jun. 30, 2018USD ($)
Incremental
2,015	$ 1,083
2,016	887
2,017	335
2,018	335
2,019	335
2,020	335
2,021	335
Cumulative
2,015	1,083
2,016	1,970
2,017	2,305
2,018	2,640
2,019	2,975
2,020	3,310
2,021	$ 3,645

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 287,564	$ 289,051
Less accumulated depreciation	(74,830)	(75,592)
Net property, plant and equipment	212,734	213,459
Mains/lines/sewers
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 119,366	117,381
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	47 years
Plant
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 76,192	72,863
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	25 years
Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 30,544	29,904
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	10 years
Meters
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 13,005	12,693
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	12 years
Furniture, fixture and leasehold improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 371	368
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	8 years
Computer and office equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 603	720
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	5 years
Software
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 241	242
Average Depreciation Life (in years)
Property plant and equipment, average depreciation life	3 years
Land and land rights
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 891	861
Other
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	428	428
Construction work-in-process
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 45,923	$ 53,591

Accounts Receivable - Summary

Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Billed receivables	$ 1,820	$ 1,691
Less allowance for doubtful accounts	(115)	(163)
Accounts receivable – net	$ 1,705	$ 1,528

Equity Method Investment - Add

Equity Method Investment - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Feb. 28, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Jun. 05, 2013
Schedule of Equity Method Investments [Line Items]
Equity method investment			$ 185		$ 345
Equity method investment gain on recapitalization of FATHOM™			0	$ 243
FATHOM
Schedule of Equity Method Investments [Line Items]
Equity method investment			185		$ 345	$ 1,600
Ownership percentage of common and preferred units	7.10%	8.00%
Equity method investment gain on recapitalization of FATHOM™			$ 243

Acquisitions (Details)

Acquisitions (Details)	May 30, 2018USD ($)mi²	Jun. 30, 2018USD ($)
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 2,800,000
Turner Ranches Water and Sanitation Company [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 2,800,000	$ 2,800,000
Active water connections	963
Area Of Certificated Service Areas | mi²	7

Acquisitions Net Assets Acquire

Acquisitions Net Assets Acquired (Details) - USD ($)	May 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Cash and cash equivalents		$ 3,778,000	$ 5,248,000	$ 9,125,000	$ 20,498,000
Accounts receivable — net		1,705,000	1,528,000
Property, Plant and Equipment, Net		212,734,000	213,459,000
Property, plant and equipment		287,564,000	289,051,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment		74,830,000	75,592,000
Accounts payable		523,000	321,000
Accrued Liabilities, Current		7,482,000	7,252,000
Goodwill			$ 0
Payments to Acquire Businesses, Gross	$ 2,800,000
Turner Ranches Water and Sanitation Company [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		176,000
Accounts receivable — net		121,000
Property, Plant and Equipment, Net		4,495,000
Property, plant and equipment		92,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment		(3,751,000)
Accounts payable		(30,000)
Accrued Liabilities, Current		(46,000)
Assets		1,057,000
Goodwill		1,743,000
Payments to Acquire Businesses, Gross	$ 2,800,000	$ 2,800,000

Goodwill & Intangible Assets -

Goodwill & Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	$ 1,545	$ 1,545
AMORTIZED INTANGIBLE ASSETS:
Gross Amount	25,384	25,384
Accumulated Amortization	(14,157)	(14,157)
Net Amount	11,227	11,227
Total intangible assets, Gross Amount	26,929	26,929
Total intangible assets, Net Amount	12,772	12,772
Acquired ICFAs
AMORTIZED INTANGIBLE ASSETS:
Gross Amount	17,978	17,978
Accumulated Amortization	(12,154)	(12,154)
Net Amount	5,824	5,824
Sonoran contract rights
AMORTIZED INTANGIBLE ASSETS:
Gross Amount	7,406	7,406
Accumulated Amortization	(2,003)	(2,003)
Net Amount	5,403	5,403
CP Water Certificate of Convenience & Necessity service area
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	1,532	1,532
Intangible trademark
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	$ 13	$ 13

Goodwill & Intangible Assets 43

Goodwill & Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Goodwill [Line Items]
Goodwill					$ 0
Amortization of intangible assets	$ 0	$ 0	$ 0	$ 0
Turner Ranches Water and Sanitation Company [Member]
Goodwill [Line Items]
Goodwill	$ 1,743,000		$ 1,743,000

Transactions With Related Par44

Transactions With Related Parties - Additional Information (Details)	Nov. 17, 2016USD ($)$ / Wateraccount	Nov. 16, 2016$ / Wateraccount	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)$ / Wateraccount	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Related Party Transaction [Line Items]
Employee medical claims paid			$ 149,000	$ 14,000	$ 211,000	$ 104,000
Due from affiliates			404,000		$ 404,000		$ 430,000
Services agreement renewable term					10 years
Global Water Management
Related Party Transaction [Line Items]
Due from affiliates			404,000		$ 404,000		$ 430,000
Purchase agreement period					10 years
Services agreement contract term					10 years
Amended services agreement, Maturity date	Dec. 31, 2026
Estimated cost per water account/month | $ / Wateraccount	6.24	7.79
Royalty			109,000	95,000	$ 217,000	187,000
Global Water Management | Maximum
Related Party Transaction [Line Items]
Royalty payments (up to $15.0 million)			15,000,000		15,000,000
Global Water Management | Meter Replacement
Related Party Transaction [Line Items]
Meter replacement program cost	$ 11,400,000
Meter replacement program paid			10,700,000		10,700,000
Global Water Management | FATHOM Services
Related Party Transaction [Line Items]
Annual cost payable					$ 1,500,000
Cost per water account/month | $ / Wateraccount					6.24
Cost of services			$ 404,000	$ 365,000	$ 760,000	$ 725,000

Accrued Expenses - Schedule of

Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accrued Liabilities, Current [Abstract]
Deferred compensation	$ 2,048	$ 2,171
Property taxes	1,047	989
Meter replacement - related party	717	717
Interest	463	468
Dividend payable	466	464
Asset retirement obligation	427	427
Deferred Compensation Share-based Arrangements, Liability, Current	448	0
Other accrued liabilities	1,866	2,016
Total accrued expenses	$ 7,482	$ 7,252

Debt - Schedule of Outstanding

Debt - Schedule of Outstanding Balances and Maturity Dates for Short Term and Long Term Debt (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Short-term
Capital lease obligations	$ 31	$ 0
Debt issuance costs		0
Total debt	39	8
Long-term
Capital lease obligations	92	0
Long-term debt and capital leases	114,472	114,363
BONDS AND NOTES PAYABLE -
Short-term
Short-term debt	8	8
Long-term
Long-term debt, noncurrent	115,052	115,056
BONDS AND NOTES PAYABLE - | 4.380% Series A 2016, maturing June 2028
Short-term
Short-term debt	0	0
Long-term
Long-term debt, noncurrent	$ 28,750	28,750
Debt instrument, interest rate	4.38%
Debt instrument, maturity date	2028-06
BONDS AND NOTES PAYABLE - | 4.580% Series B 2016, maturing June 2036
Short-term
Short-term debt	$ 0	0
Long-term
Long-term debt, noncurrent	$ 86,250	86,250
Debt instrument, interest rate	4.58%
Debt instrument, maturity date	2036-06
BONDS AND NOTES PAYABLE - | 1.200% WIFA Loan, maturing October 2032
Short-term
Short-term debt	$ 3	3
Long-term
Long-term debt, noncurrent	$ 40	41
Debt instrument, interest rate	1.20%
Debt instrument, maturity date	2032-10
BONDS AND NOTES PAYABLE - | 4.650% Harquahala Loan, maturing January 2021
Short-term
Short-term debt	$ 5	5
Long-term
Long-term debt, noncurrent	$ 12	$ 15
Debt instrument, interest rate	4.65%
Debt instrument, maturity date	2021-01

Debt - Additional Information

Debt - Additional Information (Details)	Apr. 30, 2020	Jun. 24, 2016USD ($)debt_instrument	Jun. 30, 2016USD ($)	Jun. 30, 2018USD ($)	Apr. 20, 2018USD ($)	Dec. 31, 2017USD ($)	May 31, 2017debt_instrument
Debt Instrument [Line Items]
Long-term debt, noncurrent				$ 115,100,000		$ 115,100,000
Long-term debt, fair value				111,300,000		115,700,000
Eagletail Water Company
Debt Instrument [Line Items]
Number of debt instruments | debt_instrument							2
2016 Senior Secured Notes
Debt Instrument [Line Items]
Number of debt instruments | debt_instrument		2
Debt instrument, face amount		$ 115,000,000
Debt instrument, interest rate		4.55%
Redemption percentage of principal amount		103.00%
Cash paid for prepayment penalty			$ 3,200,000
Write off of capitalized loan fees			$ 2,200,000
Debt Issuance Costs, Net				672,000		693,000
Future Debt service coverage ratio for June 30, 2021 through the quarter ending March 31, 2024		120.00%
2016 Senior Secured Notes | Series A Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 28,800,000
Debt instrument, interest rate		4.38%
Debt instrument, term		12 years
Debt instrument, maturity date		Jun. 15, 2028
2016 Senior Secured Notes | Series B Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 86,300,000
Debt instrument, interest rate		4.58%
Debt instrument, term		20 years
Debt Instrument, principal payments		$ 1,900,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate					2.25%
Debt Issuance Costs, Line of Credit Arrangements, Net				$ 137,000		$ 20,000
Line of Credit Facility, Maximum Borrowing Capacity					$ 8,000,000
Debt instrument, maturity date	Apr. 30, 2020
Debt service coverage ratio		110.00%
Debt service coverage ratio limiting dividend payment		125.00%
Bonds and notes payable | 1.200% WIFA Loan, maturing October 2032
Debt Instrument [Line Items]
Debt instrument, interest rate				1.20%
Debt instrument, term				20 years
Bonds and notes payable | 4.650% Harquahala Loan, maturing January 2021
Debt Instrument [Line Items]
Debt instrument, interest rate				4.65%
Debt instrument, term				15 years

Debt - Schedule of Aggregate A

Debt - Schedule of Aggregate Annual Maturities of Debt And Minimum Lease Payments Under Capital Lease Obligations (Details) $ in Thousands	Jun. 30, 2018USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2,018	$ 4
2,019	8
2,020	9
2,021	1,922
2,022	3,836
Thereafter	109,281
Total	115,060
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments, Fiscal Year Maturity [Abstract]
2,018	19
2,019	37
2,020	37
2,021	37
2,022	8
Thereafter	0
Subtotal	138
Less: amount representing interest	(16)
Total	$ 122

Income Taxes - Additional Info

Income Taxes - Additional Information1 (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 766,000	$ 291,000	$ 907,000	$ 461,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 3,022,000	$ 716,000	$ 3,483,000	$ 1,075,000

Deferred Compensation Awards -

Deferred Compensation Awards - Additional Information (Details) $ / shares in Units, $ in Thousands	May 20, 2016$ / shares	Nov. 14, 2013	Jul. 01, 2013	Aug. 31, 2017$ / sharesshares	May 31, 2016shares	Jun. 30, 2018USD ($)shares	Jun. 30, 2017USD ($)shares	Jun. 30, 2018USD ($)shares	Jun. 30, 2017USD ($)shares	Mar. 31, 2018shares	May 02, 2016$ / $
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired								20,673
Foreign exchange rate translation | $ / $											0.7969
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number						555,500	300,000	555,500	300,000
Phantom Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								36 months
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average days used to determine exercise price		30 days	5 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								4 years
PSUs and SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $						$ 450	$ 689	$ 362	$ 865
2016 stock option grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options granted (in shares)					325,000
Options, exercise price per share (usd per share) | $ / shares	$ 7.50
Expiration period								3 years
Fair value of the stock option expense | $								$ 348
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								2 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number						150,000		150,000
2016 stock option grant | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $						$ 24	$ 43	$ 68	87
Shares Exercised						175,000		175,000
Stock Compensation Shares Exercised Utilizing Cashless Exercise						25,000		25,000
Net Shares Outstanding After Cashless Exercise						4,327		4,327
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number						150,000		150,000
2016 stock option grant | Vest on May 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage								50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								2 years
2016 stock option grant | Vest on May 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage								50.00%
2017 stock option grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options granted (in shares)				465,000
Expiration period								10 years
Fair value of the stock option expense | $								$ 1,100
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								4 years
Split-adjusted exercise price of options (usd per share) | $ / shares				$ 9.40
2017 stock option grant | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $								$ 67	$ 121
Options forfeited										54,900
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number						405,500		405,500
2017 stock option grant | Vest on August 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage								25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								4 years
2017 stock option grant | Vest on August 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage								25.00%
2017 stock option grant | Vest on August 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage								25.00%
2017 stock option grant | Vest on August 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage								25.00%

Deferred Compensation Awards 51

Deferred Compensation Awards - Schedule of Total Awards Granted and Number of Units Outstanding (Details) - Phantom Stock Units (PSUs) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			36 months
Units Granted (in shares)			126,052
Units Outstanding (in shares)	50,288		50,288
Amounts Paid	$ 66	$ 62	$ 132	$ 114
Q1 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			8,775
Units Outstanding (in shares)	0		0
Amounts Paid	$ 0	0	$ 0	3
Q1 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			28,828
Units Outstanding (in shares)	0		0
Amounts Paid	$ 0	21	$ 22	43
Q1 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			34,830
Units Outstanding (in shares)	8,708		8,708
Amounts Paid	$ 26	25	$ 53	52
Q1 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			22,712
Units Outstanding (in shares)	13,249		13,249
Amounts Paid	$ 17	16	$ 34	16
Q1 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			30,907
Units Outstanding (in shares)	28,331		28,331
Amounts Paid	$ 23	$ 0	$ 23	$ 0

Deferred Compensation Awards 52

Deferred Compensation Awards - Schedule of Recipients of SARs Awards, Grant Date, Units Granted, Exercise Price, Outstanding Shares and Amounts Paid (Details) - Stock Appreciation Rights (SARs) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			4 years
Units Granted (in shares)			935,000
Units Outstanding (in shares)	619,000		619,000
Amounts Paid	$ 0	$ 343	$ 349	$ 678
Q3 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			48 months
Employees below senior management level | Q1 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			12 months
Expiration period			4 years
Key Executive | Q3 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			48 months
Duration of weighted average period to determine exercise price			5 days
Units Granted (in shares)			100,000
Exercise Price (in dollars per share)			$ 1.59
Units Outstanding (in shares)	0		0
Amounts Paid	$ 0	185	$ 166	366
Key Executive | Q4 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			48 months
Duration of weighted average period to determine exercise price			30 days
Units Granted (in shares)			100,000
Exercise Price (in dollars per share)			$ 2.69
Units Outstanding (in shares)	0		0
Amounts Paid	$ 0	158	$ 183	312
Key Executive | Q2 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			300,000
Exercise Price (in dollars per share)			$ 5.13
Units Outstanding (in shares)	300,000		300,000
Amounts Paid			$ 0	0
Members of Management | Q1 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			299,000
Exercise Price (in dollars per share)			$ 4.26
Units Outstanding (in shares)	183,000		183,000
Amounts Paid		$ 0	$ 0	0
Members of Management | Q3 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			103,000
Exercise Price (in dollars per share)			$ 9.40
Units Outstanding (in shares)	103,000		103,000
Amounts Paid			$ 0	$ 0
Members of Management | Q1 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units Granted (in shares)			33,000
Exercise Price (in dollars per share)			$ 8.99
Units Outstanding (in shares)	33,000		33,000
Year One | Key Executive | Q2 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			48 months
Vesting percentage			20.00%
Year One | Members of Management | Q2 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting terms			48 months
Year Two | Key Executive | Q2 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			20.00%
Year Three | Key Executive | Q2 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			20.00%
Year Four | Key Executive | Q2 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			40.00%

Deferred Compensation Awards 53

Deferred Compensation Awards - Schedule of Estimated Future Compensation Expense (Details) $ in Thousands	Jun. 30, 2018USD ($)
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,018	$ 141
2,019	172
2,020	99
2,021	0
2,022	0
Total	412
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,018	464
2,019	236
2,020	91
2,021	74
2,022	6
Total	$ 871

Supplemental Cash Flow Inform54

Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Cash paid for interest	$ 2,609	$ 2,613
Capital expenditures included in accounts payable and accrued liabilities	763	2,330
Equity method investment gain on recapitalization of FATHOM™	0	243
GWR Global Water Resources Corp
Business Acquisition [Line Items]
Cash paid for GWRC tax liability	$ 0	$ 125

Commitments and Contingencies

Commitments and Contingencies - Additional Information (Details) - Office Space - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 29, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018
Loss Contingencies [Line Items]
Operating leases term of lease agreement	3 years
Operating leases monthly rental expense related to new agreement	$ 8,000
Operating leases rent expense		$ 25,000	$ 24,000	$ 49,000

Subsequent Event - Additional

Subsequent Event - Additional Information (Details) - Subsequent Event $ / shares in Units, $ in Millions	Jul. 20, 2018USD ($)$ / sharesshares
Subsequent Event [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	1,720,000
Sale of Stock, Price Per Share | $ / shares	$ 9.25
Option Indexed to Issuer's Equity, Indexed Shares	220,000
Sale of Stock, Consideration Received on Transaction | $	$ 14.7