New Accounting Pronouncements	9 Months Ended
Jun. 30, 2017
Accounting Policies [Abstract]
New Accounting Pronouncements	2. New Accounting Pronouncements Accounting Standards to be Implemented In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Codification (“ASC”) Update No. 2014-09, Revenue from Contracts with Customers (ASC Topic 606). Principles of this guidance require entities to recognize revenue in a manner that depicts the transfer of goods or services to customers in amounts that reflect the consideration an entity expects to be entitled to in exchange for those goods or services. The guidance also requires expanded disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. This accounting standard will be effective for the Company beginning in the first quarter of fiscal year 2019 (October 1, 2018) using one of two prescribed retrospective methods. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s business model and consolidated results of operations, cash flows and financial position. The Company currently plans to adopt the standard using the modified retrospective approach and expects the impact will be material to the consolidated financial statements due to an anticipated one-quarter acceleration of minimum license fees and royalty revenue earned under its hydrophilic license agreements, as well as several additional required disclosures. In February 2016, the FASB issued Accounting Standards Update ASU 2016-02, Leases (ASC Topic 842). The new guidance primarily affects lessee accounting, while accounting by lessors will not be significantly impacted by the update. The update maintains two classifications of leases: finance leases, which replace capital leases, and operating leases. Lessees will need to recognize a right-of-use asset and a lease liability on the statement of financial position for those leases previously classified as operating leases under the old guidance. The liability will be equal to the present value of remaining contractual lease payments. The asset will be based on the liability, subject to adjustment, such as for direct costs. The accounting standard will be effective for the Company beginning the first quarter of fiscal year 2020 (October 1, 2019) and will be applied using a modified retrospective approach. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s results of operations, cash flows and financial position. Based on a preliminary assessment, the Company currently estimates the impact will not be material due to the fact that the leasing activities the Company engages in are not material to its operations. In June 2016, the FASB issued ASU No 2016-13, Financial Instruments – Credit Losses (ASC Topic 326), Measurement of Credit Losses on Financial Statements. This ASU requires a financial asset (or a group of financial assets) measured at an amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The accounting standard will be effective for the Company beginning in the first quarter of fiscal 2020 (October 1, 2019). Early adoption is permitted and the guidance will be applied using a modified retrospective approach. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s results of operations, cash flows and financial position. Based on a preliminary assessment, the Company currently estimates the impact will not be material as it historically has not had significant collectability concerns with its customers. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies requirements for presentation and classification of the following items within the statement of cash flows: debt prepayments, settlement of zero coupon debt instruments, contingent consideration payments, insurance proceeds, securitization transactions and distributions from equity method investees. The update also addresses classification of transactions that have characteristics of more than one class of cash flows. The accounting standard will be effective for the Company beginning in the first quarter of fiscal 2018. Early adoption is permitted, including adoption in an interim period, and the guidance will be applied retrospectively. The Company estimates the impact of this guidance will not be material to the Company’s consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The accounting standard will be effective for the Company beginning in its fiscal 2020. Early adoption is permitted, and the guidance will be applied prospectively. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s consolidated financial statements. Accounting Standards Implemented In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (ASC Topic 718): Improvements to Employee Share-Based Payment Accounting. The accounting standard intends to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The accounting standard is effective for the Company beginning in the first quarter of fiscal 2018 (October 1, 2017), and early adoption is permitted. The Company elected to early-adopt this accounting standard in the fourth quarter of fiscal 2016, for the fiscal year ended September 30, 2016. As a result of the adoption, the Company records excess tax benefits and certain tax deficiencies as income tax expense or benefit in the condensed consolidated statements of income, whereas such excess tax benefits or tax deficiencies were previously recorded in additional paid-in capital. As this guidance was applied retroactively to the beginning of the fiscal year ended September 30, 2016, previously reported quarterly income tax and net income for interim periods therein were adjusted for the effects of the adoption. This resulted in adjustments to increase the income tax provision and decrease net income by less than $0.1 million for the three months ended June 30, 2016 and to reduce the income tax provision and increase net income by less than $0.1 million for the nine months ended June 30, 2016. The adoption of this ASU also resulted in a (reduction) increase in net income per basic and diluted share of less than ($0.01) per share and $0.01 per share, respectively, for the three and nine-month periods ended June 30, 2016. The newly adopted guidance also requires presentation of excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity. Prior to the adoption of ASU No. 2016-09, cash flows resulting from the tax benefits generated by tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) were classified as financing cash flows. During the nine months ended June 30, 2016, the Company realized tax benefits from stock options resulting in approximately $0.1 million of gross excess tax benefits, which are included as a component of cash flows from operating activities in the accompanying condensed consolidated statements of cash flows. This amount was previously reported as a component of cash flows from financing activities, but has been reclassified to conform to current accounting guidance. No other new accounting pronouncement issued or effective has had, or is expected to have, a material impact on the Company’s condensed consolidated financial statements.

2. New Accounting Pronouncements

Accounting Standards to be Implemented

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Codification (“ASC”) Update No. 2014-09, Revenue from Contracts with Customers (ASC Topic 606). Principles of this guidance require entities to recognize revenue in a manner that depicts the transfer of goods or services to customers in amounts that reflect the consideration an entity expects to be entitled to in exchange for those goods or services. The guidance also requires expanded disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. This accounting standard will be effective for the Company beginning in the first quarter of fiscal year 2019 (October 1, 2018) using one of two prescribed retrospective methods. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s business model and consolidated results of operations, cash flows and financial position. The Company currently plans to adopt the standard using the modified retrospective approach and expects the impact will be material to the consolidated financial statements due to an anticipated one-quarter acceleration of minimum license fees and royalty revenue earned under its hydrophilic license agreements, as well as several additional required disclosures.

In February 2016, the FASB issued Accounting Standards Update ASU 2016-02, Leases (ASC Topic 842). The new guidance primarily affects lessee accounting, while accounting by lessors will not be significantly impacted by the update. The update maintains two classifications of leases: finance leases, which replace capital leases, and operating leases. Lessees will need to recognize a right-of-use asset and a lease liability on the statement of financial position for those leases previously classified as operating leases under the old guidance. The liability will be equal to the present value of remaining contractual lease payments. The asset will be based on the liability, subject to adjustment, such as for direct costs. The accounting standard will be effective for the Company beginning the first quarter of fiscal year 2020 (October 1, 2019) and will be applied using a modified retrospective approach. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s results of operations, cash flows and financial position. Based on a preliminary assessment, the Company currently estimates the impact will not be material due to the fact that the leasing activities the Company engages in are not material to its operations.

In June 2016, the FASB issued ASU No 2016-13, Financial Instruments – Credit Losses (ASC Topic 326), Measurement of Credit Losses on Financial Statements. This ASU requires a financial asset (or a group of financial assets) measured at an amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The accounting standard will be effective for the Company beginning in the first quarter of fiscal 2020 (October 1, 2019). Early adoption is permitted and the guidance will be applied using a modified retrospective approach. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s results of operations, cash flows and financial position. Based on a preliminary assessment, the Company currently estimates the impact will not be material as it historically has not had significant collectability concerns with its customers.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies requirements for presentation and classification of the following items within the statement of cash flows: debt prepayments, settlement of zero coupon debt instruments, contingent consideration payments, insurance proceeds, securitization transactions and distributions from equity method investees. The update also addresses classification of transactions that have characteristics of more than one class of cash flows. The accounting standard will be effective for the Company beginning in the first quarter of fiscal 2018. Early adoption is permitted, including adoption in an interim period, and the guidance will be applied retrospectively. The Company estimates the impact of this guidance will not be material to the Company’s consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The accounting standard will be effective for the Company beginning in its fiscal 2020. Early adoption is permitted, and the guidance will be applied prospectively. The Company is currently evaluating the impact that the adoption of this standard will have on the Company’s consolidated financial statements.

Accounting Standards Implemented

In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (ASC Topic 718): Improvements to Employee Share-Based Payment Accounting. The accounting standard intends to simplify several areas of accounting for share-based compensation arrangements, including the income tax impact, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The accounting standard is effective for the Company beginning in the first quarter of fiscal 2018 (October 1, 2017), and early adoption is permitted. The Company elected to early-adopt this accounting standard in the fourth quarter of fiscal 2016, for the fiscal year ended September 30, 2016. As a result of the adoption, the Company records excess tax benefits and certain tax deficiencies as income tax expense or benefit in the condensed consolidated statements of income, whereas such excess tax benefits or tax deficiencies were previously recorded in additional paid-in capital. As this guidance was applied retroactively to the beginning of the fiscal year ended September 30, 2016, previously reported quarterly income tax and net income for interim periods therein were adjusted for the effects of the adoption. This resulted in adjustments to increase the income tax provision and decrease net income by less than $0.1 million for the three months ended June 30, 2016 and to reduce the income tax provision and increase net income by less than $0.1 million for the nine months ended June 30, 2016. The adoption of this ASU also resulted in a (reduction) increase in net income per basic and diluted share of less than ($0.01) per share and $0.01 per share, respectively, for the three and nine-month periods ended June 30, 2016.

The newly adopted guidance also requires presentation of excess tax benefits as an operating activity on the statement of cash flows rather than as a financing activity. Prior to the adoption of ASU No. 2016-09, cash flows resulting from the tax benefits generated by tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) were classified as financing cash flows. During the nine months ended June 30, 2016, the Company realized tax benefits from stock options resulting in approximately $0.1 million of gross excess tax benefits, which are included as a component of cash flows from operating activities in the accompanying condensed consolidated statements of cash flows. This amount was previously reported as a component of cash flows from financing activities, but has been reclassified to conform to current accounting guidance.

No other new accounting pronouncement issued or effective has had, or is expected to have, a material impact on the Company’s condensed consolidated financial statements.