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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized			100,000,000	100,000,000
Common stock, shares outstanding			21,456,539	21,475,741
Unvested shares forfeited			7,500	0	0
Equity Class Of Treasury Stock [Line Items]
Treasury Stock Value Acquired Cost Method			$ 590	$ 3,622	$ 179
Residual Shares Related To Acquisition Returned To Treasury Stock			6,859
The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available Common Stock Authorized Shares				1,056,574
Common stock, shares authorized			3,000,000	3,000,000
Common shares repurchased for tax withholding			6,084	17,677
Shares issued under share based compensation program				199,565
The2015StockRepurchaseProgram [Member]
Equity Class Of Treasury Stock [Line Items]
Treasury Stock Shares Acquired				482,156
Treasury Stock Value Acquired Cost Method				$ 3,500
Restricted Stock [Member] | The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense			$ 522	290	201
Unamortized compensation cost			763
Fair Value of Restricted Stock Vesting			$ 304	353	571
Weighted Avg Grant Date Fair Value of Unvested Restricted Stock			$ 8.48
Restricted Stock [Member] | The 2006 Equity Incentive Plan [Member] | Scenario Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense to be recognized	$ 258	$ 505
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			$ 136	224	243
Stock Option [Member] | The 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense			70	(45)	$ 267
Unamortized compensation cost			23
Intrinsic Value			$ 286	$ 88
Stock Option [Member] | The 2006 Equity Incentive Plan [Member] | Scenario Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense to be recognized		$ 23
Performance Cash Units [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			420,000
Recognized compensation expense			$ 808

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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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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The amount of plan compensation cost recognized during the period.

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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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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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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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