Stockholders' Equity (Details) - USD ($)	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares forfeited	0	2,257	7,500
Common Stock, Shares Authorized	100,000,000	100,000,000
Equity Class Of Treasury Stock [Line Items]
Approved Number of shares to be repurchased	1,500,000
New Accounting Pronouncement Early Adoption [Line Items]
Cumulative Effect Of New Accounting Principle In Period Of Adoption		$ 363,000
The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available Common Stock Authorized Shares	1,113,476
Common shares repurchased for tax withholding	32,832	7,376
Shares issued under share based compensation program	1,500	33,750
Common Stock, Shares Authorized	3,000,000
The 2006 Equity Incentive Plan [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under share based compensation program	520	1,803
The 2015 Stock Repurchase Program [Member]
Equity Class Of Treasury Stock [Line Items]
Approved Number of shares to be repurchased	1,500,000
Treasury Stock Shares Acquired	100,627	145,484
Average Share Price	$ 15.41	$ 15.37
Restricted Stock [Member] \| The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	$ 256,000	$ 538,000	$ 522,000
Unamortized compensation cost	0
Fair Value of Restricted Stock Vesting	$ 2,201,000	460,000	304,000
Weighted Avg Grant Date Fair Value of Unvested Restricted Stock	$ 0
Phantom Share Units PSU's \| The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	$ 189,000	167,000	136,000
Performance Based Phantom Share Units PPSUs [Member] \| The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under share based compensation program	399,027
Recognized compensation expense	$ (581,000)	959,000
Performance Cash Units [Member] \| The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	154,000	331,000
Stock Option [Member] \| The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	0	23,000	$ 70,000
Intrinsic Value	$ 292,000	$ 306,000

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Unrecognized cost of unvested share-based compensation awards.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Number of share instruments newly issued under a share-based compensation plan.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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