Recent Accounting Pronouncements (Policies)	9 Months Ended
Recent Accounting Pronouncements (Policies)	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. GAAP for interim financial information. As such, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments, except as disclosed herein) considered necessary for a fair statement have been included. Results of operations for the three and nine months ended June 30, 2018 are not necessarily indicative of results to be expected for the fiscal year ending September 30, 2018. Quarterly financial data should be read in conjunction with the consolidated financial statements and accompanying notes for the fiscal year ended September 30, 2017 included in the Company's Annual Report on Form 10-K filed with the SEC on December 7, 2017. The Company recorded out-of-period adjustments during the three and nine months ended June 30, 2018 to correct errors in the tax provision and accrued costs. The net impact of these adjustments for the nine months ended June 30, 2018 was an increase to revenue of $0.4 million, a decrease to gross profit of $0.9 million and a decrease to net income $2.0 million. The net impact of the adjustment for the three months ended June 30, 2018 was an increase to revenue of $1.0 million, a decrease to gross profit of $1.8 million and a decrease to net income of $2.8 million. The Company does not believe these adjustments are material, individually or in the aggregate, to its unaudited Condensed Consolidated Financial Statements for the three and nine months ended June 30, 2018, nor does it believe such items are material to any of its previously issued annual or quarterly financial statements, or its expected 2018 annual financial statements. The consolidated financial data as of September 30, 2017 presented in these unaudited condensed consolidated financial statements were derived from the Company’s audited consolidated financial statements, but do not include all disclosures required by U.S. GAAP.
Recent Accounting Pronouncements Adopted and New Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Adopted In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory. The amendments in this ASU require an entity to measure inventory at the lower of cost or net realizable value, whereas guidance previously required an assessment of market value of inventory, with different possibilities for determining market value. This ASU is effective for fiscal years beginning after December 15, 2016 and interim periods within those years and early adoption is permitted. The Company adopted this standard as of October 1, 2017, and it did not have a material effect on the Company’s financial position or results of operations. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The updated guidance simplifies several aspects of accounting for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as the classification of related matters in the statement of cash flows. This ASU is effective for annual reporting periods beginning after December 15, 2016 and interim periods within those annual periods. The Company adopted this standard as of October 1, 2017 and it did not have a material effect on the Company’s financial position or results of operations. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718): This ASU clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as a modified award. The new guidance will reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications. The amendments in this ASU will be applied prospectively to awards modified on or after the adoption date. The Company adopted this standard as of October 1, 2017 and it did not have a material effect on the Company’s financial position or results of operations. New Accounting Pronouncements Not Yet Adopted The Company continues the evaluation of the potential effects on its financial position or results of operations of the accounting pronouncements disclosed in its consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017 filed with the SEC on December 7, 2017, including ASU 2014-09, Revenue from Contracts with Customers and ASU 2016-02, Leases. With regards to ASU 2014-09, the Company continues to work on the identification, design and implementation of changes to its accounting systems, policies and internal controls to support the recognition and disclosure requirements under the new revenue recognition standard. However, the Company does not anticipate the adoption of the guidance will have a material effect on the amount or the timing of revenue recognition associated with the majority of its customer contracts given their general terms and duration. The Company expects to utilize the modified retrospective method of adoption by recognizing the cumulative effect of the adoption change as an adjustment to beginning of period retained earnings for the first quarter of fiscal 2019. The Company is in the process of evaluating the potential effects of ASU 2016-02 and is formulating its implementation plan, including potential changes to accounting systems, policies and internal controls to support the adoption of the new guidance.