Summary of Significant Accounting Policies	3 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates The preparation of unaudited consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates are associated with accounts receivable, inventories, goodwill, intangible assets other than goodwill, long-lived assets, derivative financial instruments, deferred income taxes, warranty obligations, revenue recognized using the percentage of completion method, pension obligations and stock-based compensation expense. The Company bases its estimates on historical experience and various other assumptions, including in certain circumstances, future projections that management believes to be reasonable under the circumstances. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they occur and become known. Recently Issued Accounting Pronouncements In November 2015, the Financial Accounting Standards Board, or FASB, issued an amendment to the accounting guidance to simplify the presentation of deferred income tax assets and liabilities in a statement of financial position. Deferred income tax assets, net of a corresponding valuation allowance, and liabilities related to a particular tax-paying component of an entity within a particular tax jurisdiction shall be offset and presented as a single noncurrent amount in a statement of financial position. Deferred income tax assets and liabilities attributable to different tax-paying components of an entity or different tax jurisdictions shall not be offset and be presented separately. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. Early adoption is permitted. The guidance can be adopted via either a prospective or a retrospective approach for all deferred income tax assets and liabilities presented in a statement of financial position. The Company is currently evaluating the impact of this guidance on its financial position and results of operations. In September 2015, the FASB issued a new accounting guidance to simplify the presentation of measurement-period adjustments recognized in business combinations. Measurement-period adjustments will no longer be recognized by the acquirer retrospectively and will be recorded by the acquirer during the period in which they were determined. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015 and should be applied prospectively to the adjustments that occur after the effective date of the guidance. Early adoption is permitted for the financial statements that have not been issued, and the Company adopted the guidance during the three months ended December 31, 2015 to simplify the presentation of the measurement period adjustments in its consolidated financial statements. During the three months ended December 31, 2015, the Company recorded a measurement period adjustment of $1.1 million related to the acquisition of Contact Co., Ltd and recognized its impact in the accompanying consolidated balance sheets as of the period then ended in accordance with the provisions of the newly adopted guidance. There was no impact on the results of operations during the three months ended December 31, 2015 as a result of this adjustment. This adjustment would have been applied retrospectively and recognized as a reclassification in the accompanying consolidated balance sheets as of September 30, 2015 in accordance with provisions of the previous guidance. In April 2014, the FASB issued an amendment to the accounting guidance for reporting discontinued operations. The amended guidance raises the threshold for disposals to qualify as a discontinued operation by requiring a component of an entity that is held for sale, or has been disposed of by sale, to represent a strategic shift that has or will have a major effect on operations and financial results. A strategic shift could include the disposal of a major line of business, a major geographical area, a major equity method investment or other major parts of an entity. In addition, the guidance allows companies to have significant continuing involvement and continuing cash flows with the discontinued operation. The guidance became effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2014 and is applied prospectively. The Company adopted the guidance during the first quarter of fiscal year 2016. The guidance did not have an impact on the Company's financial position and the results of operations. Other For further information with regard to the Company's Significant Accounting Policies, please refer to Note 2 "Summary of Significant Accounting Policies" of the Company's Consolidated Financial Statements included in the 2015 Annual Report on Form 10-K.

Summary of Significant Accounting Policies

Use of Estimates

The preparation of unaudited consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates are associated with accounts receivable, inventories, goodwill, intangible assets other than goodwill, long-lived assets, derivative financial instruments, deferred income taxes, warranty obligations, revenue recognized using the percentage of completion method, pension obligations and stock-based compensation expense. The Company bases its estimates on historical experience and various other assumptions, including in certain circumstances, future projections that management believes to be reasonable under the circumstances. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they occur and become known.

Recently Issued Accounting Pronouncements

In November 2015, the Financial Accounting Standards Board, or FASB, issued an amendment to the accounting guidance to simplify the presentation of deferred income tax assets and liabilities in a statement of financial position. Deferred income tax assets, net of a corresponding valuation allowance, and liabilities related to a particular tax-paying component of an entity within a particular tax jurisdiction shall be offset and presented as a single noncurrent amount in a statement of financial position. Deferred income tax assets and liabilities attributable to different tax-paying components of an entity or different tax jurisdictions shall not be offset and be presented separately. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. Early adoption is permitted. The guidance can be adopted via either a prospective or a retrospective approach for all deferred income tax assets and liabilities presented in a statement of financial position. The Company is currently evaluating the impact of this guidance on its financial position and results of operations.

In September 2015, the FASB issued a new accounting guidance to simplify the presentation of measurement-period adjustments recognized in business combinations. Measurement-period adjustments will no longer be recognized by the acquirer retrospectively and will be recorded by the acquirer during the period in which they were determined. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015 and should be applied prospectively to the adjustments that occur after the effective date of the guidance. Early adoption is permitted for the financial statements that have not been issued, and the Company adopted the guidance during the three months ended December 31, 2015 to simplify the presentation of the measurement period adjustments in its consolidated financial statements. During the three months ended December 31, 2015, the Company recorded a measurement period adjustment of $1.1 million related to the acquisition of Contact Co., Ltd and recognized its impact in the accompanying consolidated balance sheets as of the period then ended in accordance with the provisions of the newly adopted guidance. There was no impact on the results of operations during the three months ended December 31, 2015 as a result of this adjustment. This adjustment would have been applied retrospectively and recognized as a reclassification in the accompanying consolidated balance sheets as of September 30, 2015 in accordance with provisions of the previous guidance.

In April 2014, the FASB issued an amendment to the accounting guidance for reporting discontinued operations. The amended guidance raises the threshold for disposals to qualify as a discontinued operation by requiring a component of an entity that is held for sale, or has been disposed of by sale, to represent a strategic shift that has or will have a major effect on operations and financial results. A strategic shift could include the disposal of a major line of business, a major geographical area, a major equity method investment or other major parts of an entity. In addition, the guidance allows companies to have significant continuing involvement and continuing cash flows with the discontinued operation. The guidance became effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2014 and is applied prospectively. The Company adopted the guidance during the first quarter of fiscal year 2016. The guidance did not have an impact on the Company's financial position and the results of operations.

Other

For further information with regard to the Company's Significant Accounting Policies, please refer to Note 2 "Summary of Significant Accounting Policies" of the Company's Consolidated Financial Statements included in the 2015 Annual Report on Form 10-K.