OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
Jun. 30, 2017
Accounting Policies [Abstract]
OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Overview Powell Industries, Inc. (we, us, our, Powell or the Company) was incorporated in the state of Delaware in 2004 as a successor to a Nevada company incorporated in 1968. The Nevada corporation was the successor to a company founded by William E. Powell in 1947, which merged into the Company in 1977. Our major subsidiaries, all of which are wholly owned, include: Powell Electrical Systems, Inc.; Powell (UK) Limited; Powell Canada Inc. and Powell Industries International, B.V. We develop, design, manufacture and service custom-engineered equipment and systems for the distribution, control and monitoring of electrical energy. Headquartered in Houston, Texas, we serve the oil and gas refining, offshore oil and gas production, petrochemical, pipeline, terminal, mining and metals, light rail traction power, electric utility, pulp and paper and other industrial markets. Basis of Presentation These unaudited condensed consolidated financial statements include the accounts of Powell and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. These unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X for interim financial information. Certain information and footnote disclosures, normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP), have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, necessary to fairly state the financial position, results of operations and cash flows with respect to the interim condensed consolidated financial statements have been included. The results of operations for the interim periods are not necessarily indicative of the results for the entire fiscal year. We believe that these financial statements contain all adjustments necessary so that they are not misleading. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto of Powell and its subsidiaries included in Powell’s Annual Report on Form 10-K for the year ended September 30, 2016, which was filed with the Securities and Exchange Commission (SEC) on December 7, 2016. References to Fiscal 2017 and Fiscal 2016 used throughout this report shall mean our fiscal years ended September 30, 2017 and 2016, respectively. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying footnotes. The most significant estimates used in our condensed consolidated financial statements affect revenue and cost recognition for construction contracts, the allowance for doubtful accounts, provision for excess and obsolete inventory, self-insurance, warranty accruals, liquidated damages and income taxes. The amounts recorded for insurance claims, warranties, legal, liquidated damages, income taxes and other contingent liabilities require judgments regarding the amount of expenses that will ultimately be incurred. We base our estimates on historical experience and on various other assumptions, as well as the specific circumstances surrounding these contingent liabilities, in evaluating the amount of liability that should be recorded. Additionally, the recognition of deferred tax assets requires estimates related to future income and other assumptions regarding timing and future profitability. Estimates routinely change as new events occur, additional information becomes available or operating environments change. Actual results may differ from our prior estimates. For the three and nine months ended June 30, 2017, our operating loss was positively impacted by $3.6 million and $7.4 million, respectively, as a result of changes in contract estimates related to projects in progress at the beginning of the respective periods. These changes in estimates resulted primarily from, among other things, successful execution and close-out improvements, as well as other changes in facts and circumstances during these periods. New Accounting Standards In May 2014, the Financial Accounting Standards Board (FASB) issued a new standard on revenue recognition that supersedes previously issued revenue recognition guidance. This standard provides a five-step approach to be applied to all contracts with customers and requires expanded disclosures about the nature, amount, timing and uncertainty of revenue (and the related cash flows) arising from customer contracts, significant judgments and changes in judgments used in applying the revenue model and the assets recognized from costs incurred to obtain or fulfill a contract. This standard is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, which would be our fiscal year ending September 30, 2019. We continue to work with various other companies in our industry as well as outside accounting advisors to evaluate this standard and understand the impact that the adoption of this new standard will have on our consolidated financial statements and related disclosures. We believe that we will continue to recognize revenue over time utilizing the cost-to-cost method to measure our progress for the vast majority of our contracts. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting. In November 2015, the FASB issued an amendment to the topic regarding income taxes which requires an entity to separate deferred income tax liabilities and assets into current and noncurrent amounts in the statement of financial position. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. Deferred tax liabilities and assets that are not related to an asset or liability for financial reporting are classified according to the expected reversal date of the temporary difference. To simplify the presentation of deferred income taxes, the amendments require that deferred income tax liabilities and assets be classified as noncurrent in a classified statement of financial position. This amendment is effective for annual reporting periods beginning after December 15, 2016, which would be our fiscal year ending September 30, 2018. We have no plans for early adoption. We are still evaluating this new amendment, but we do not expect it to have a material impact on our consolidated financial position or results of operations. In February 2016, the FASB issued a new topic on leases which requires lessees to recognize lease assets and lease liabilities on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. This would be our fiscal year ending September 30, 2020. We plan to adopt this new standard beginning in Fiscal 2018, and do not expect it to have a material impact on our consolidated financial position or results of operations. In November 2016, the FASB issued new standards on the statement of cash flows and restricted cash that change the presentation of restricted cash and cash equivalents on the statement of cash flows. Restricted cash and restricted cash equivalents will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. These standards are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, which would be our fiscal year ending September 30, 2019. We have no plans for early adoption. We are still evaluating these new standards, but we do not expect them to have a material impact on our consolidated financial position or results of operations. In May 2017, the FASB issued a new topic on modification accounting with regards to stock based compensation. This new topic clarifies when a change to the terms or conditions of a share-based payment award should be accounted for as a modification. An entity should account for the effects of a modification unless the fair value, vesting conditions and classification, as an equity instrument or a liability instrument, of the modified award are the same before and after a change to the terms or conditions of the share-based payment award. The standard is effective for annual reporting periods beginning after December 15, 2017, which would be our fiscal year ending September 30, 2018. We do not expect this topic to have a material impact on our consolidated financial position or results of operations.

OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Overview

Powell Industries, Inc. (we, us, our, Powell or the Company) was incorporated in the state of Delaware in 2004 as a successor to a Nevada company incorporated in 1968. The Nevada corporation was the successor to a company founded by William E. Powell in 1947, which merged into the Company in 1977. Our major subsidiaries, all of which are wholly owned, include: Powell Electrical Systems, Inc.; Powell (UK) Limited; Powell Canada Inc. and Powell Industries International, B.V.

We develop, design, manufacture and service custom-engineered equipment and systems for the distribution, control and monitoring of electrical energy. Headquartered in Houston, Texas, we serve the oil and gas refining, offshore oil and gas production, petrochemical, pipeline, terminal, mining and metals, light rail traction power, electric utility, pulp and paper and other industrial markets.

Basis of Presentation

These unaudited condensed consolidated financial statements include the accounts of Powell and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.

These unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X for interim financial information. Certain information and footnote disclosures, normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP), have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, necessary to fairly state the financial position, results of operations and cash flows with respect to the interim condensed consolidated financial statements have been included. The results of operations for the interim periods are not necessarily indicative of the results for the entire fiscal year. We believe that these financial statements contain all adjustments necessary so that they are not misleading.

These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto of Powell and its subsidiaries included in Powell’s Annual Report on Form 10-K for the year ended September 30, 2016, which was filed with the Securities and Exchange Commission (SEC) on December 7, 2016.

References to Fiscal 2017 and Fiscal 2016 used throughout this report shall mean our fiscal years ended September 30, 2017 and 2016, respectively.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying footnotes. The most significant estimates used in our condensed consolidated financial statements affect revenue and cost recognition for construction contracts, the allowance for doubtful accounts, provision for excess and obsolete inventory, self-insurance, warranty accruals, liquidated damages and income taxes. The amounts recorded for insurance claims, warranties, legal, liquidated damages, income taxes and other contingent liabilities require judgments regarding the amount of expenses that will ultimately be incurred. We base our estimates on historical experience and on various other assumptions, as well as the specific circumstances surrounding these contingent liabilities, in evaluating the amount of liability that should be recorded. Additionally, the recognition of deferred tax assets requires estimates related to future income and other assumptions regarding timing and future profitability. Estimates routinely change as new events occur, additional information becomes available or operating environments change. Actual results may differ from our prior estimates.

For the three and nine months ended June 30, 2017, our operating loss was positively impacted by $3.6 million and $7.4 million, respectively, as a result of changes in contract estimates related to projects in progress at the beginning of the respective periods. These changes in estimates resulted primarily from, among other things, successful execution and close-out improvements, as well as other changes in facts and circumstances during these periods.

New Accounting Standards

In May 2014, the Financial Accounting Standards Board (FASB) issued a new standard on revenue recognition that supersedes previously issued revenue recognition guidance. This standard provides a five-step approach to be applied to all contracts with customers and requires expanded disclosures about the nature, amount, timing and uncertainty of revenue (and the related cash flows) arising from customer contracts, significant judgments and changes in judgments used in applying the revenue model and the assets recognized from costs incurred to obtain or fulfill a contract. This standard is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, which would be our fiscal year ending September 30, 2019. We continue to work with various other companies in our industry as well as outside accounting advisors to evaluate this standard and understand the impact that the adoption of this new standard will have on our consolidated financial statements and related disclosures. We believe that we will continue to recognize revenue over time utilizing the cost-to-cost method to measure our progress for the vast majority of our contracts. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting.

In November 2015, the FASB issued an amendment to the topic regarding income taxes which requires an entity to separate deferred income tax liabilities and assets into current and noncurrent amounts in the statement of financial position. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. Deferred tax liabilities and assets that are not related to an asset or liability for financial reporting are classified according to the expected reversal date of the temporary difference. To simplify the presentation of deferred income taxes, the amendments require that deferred income tax liabilities and assets be classified as noncurrent in a classified statement of financial position. This amendment is effective for annual reporting periods beginning after December 15, 2016, which would be our fiscal year ending September 30, 2018. We have no plans for early adoption. We are still evaluating this new amendment, but we do not expect it to have a material impact on our consolidated financial position or results of operations.

In February 2016, the FASB issued a new topic on leases which requires lessees to recognize lease assets and lease liabilities on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. This would be our fiscal year ending September 30, 2020. We plan to adopt this new standard beginning in Fiscal 2018, and do not expect it to have a material impact on our consolidated financial position or results of operations.

In November 2016, the FASB issued new standards on the statement of cash flows and restricted cash that change the presentation of restricted cash and cash equivalents on the statement of cash flows. Restricted cash and restricted cash equivalents will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. These standards are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, which would be our fiscal year ending September 30, 2019. We have no plans for early adoption. We are still evaluating these new standards, but we do not expect them to have a material impact on our consolidated financial position or results of operations.

In May 2017, the FASB issued a new topic on modification accounting with regards to stock based compensation. This new topic clarifies when a change to the terms or conditions of a share-based payment award should be accounted for as a modification. An entity should account for the effects of a modification unless the fair value, vesting conditions and classification, as an equity instrument or a liability instrument, of the modified award are the same before and after a change to the terms or conditions of the share-based payment award. The standard is effective for annual reporting periods beginning after December 15, 2017, which would be our fiscal year ending September 30, 2018. We do not expect this topic to have a material impact on our consolidated financial position or results of operations.