Equity and Stock-Based Compensation - Summary of Equity Compensation Plans (Details)	12 Months Ended
Sep. 30, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant	956,053
Options Outstanding	1,068,665
2007 Employee Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Authorized	3,000,000
Shares Available for Grant	856,453
Options Outstanding	879,314
Plan Expiration	Mar. 31, 2024
Non-Employee Directors Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Authorized	500,000
Shares Available for Grant	99,600
Options Outstanding	189,351
Plan Expiration	Mar. 31, 2020

Date the equity-based award expires, in CCYY-MM-DD format.

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-Section 50
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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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