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Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Dec. 09, 2015
Feb. 04, 2015
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     21,475,741 21,767,700      
Rights Offering [Abstract]              
Rights Offering Date     Aug. 07, 2014        
Rights Offering Description     On August 7, 2014, we completed a $20,000 rights offering (the “Rights Offering”). In the Rights Offering, the Company distributed, at no charge, to the holders of shares of its common stock on July 7, 2014, one non-transferable subscription right for each share of common stock owned. Each right entitled the holder thereof to purchase from the Company 0.214578135 shares of common stock at a subscription price of $5.20 per share, which represented a discount to the market price of the common stock at the closing of the offering. In addition, holders who purchased all of the shares of common stock available to them were entitled to subscribe, at the same subscription price of $5.20 per share, for a portion of any shares of common stock that other holders did not purchase, subject to certain limitations (the “Over-Subscription Privilege”). The Rights Offering was fully subscribed, after giving effect to the exercise of Over-Subscription Privileges, and we received net proceeds of approximately $19,649, after deducting estimated offering expenses, for the issuance of 3,846,150 shares of common stock.        
Proceeds From Issuance Of Common Stock From RIghts Offering       $ 20,000      
Proceeds From Issuance O fCommon Stock Net Of Issuance Costs       19,649      
Shares Available To Purchase Per Right     0.214578135        
Shares Issued Price Per Share From Rights Offering     $ 5.2        
Common Stock Shares Issued From Rights Offering     3,846,150        
Common Stock Shares Outstanding From Rights Offering     21,768,642        
Controlling Shareholder Ownership Percentage Before Rights Offering     60.00%        
Controlling Shareholder Ownership Percentage After Rights Offering     61.00%        
Equity Class Of Treasury Stock [Line Items]              
Treasury Stock Value Acquired Cost Method     $ 3,622 $ 179      
The 2006 Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock, shares authorized     2,000,000        
Common shares repurchased for tax withholding     17,677 36,272      
Shares issued under share based compensation program     199,565 13,500      
Available Common Stock Authorized Shares     472,054        
The 2006 Equity Incentive Plan [Member] | Scenario Forecast [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock, shares authorized           1,000,000  
The2015StockRepurchaseProgram [Member]              
Equity Class Of Treasury Stock [Line Items]              
Approved Number of shares to be repurchased             1,000,000
Treasury Stock Shares Acquired     482,156        
Treasury Stock Value Acquired Cost Method     $ 3,500        
Average Share Price     $ 7.22        
The2015StockRepurchaseProgram [Member] | Scenario Forecast [Member]              
Equity Class Of Treasury Stock [Line Items]              
Approved Number of shares to be repurchased           500,000  
Phantom Share Units PSU's - Employee | The 2006 Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Recognized compensation expense     $ 0 $ 0 $ 651    
Phantom Share Units PSU's - BOD [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     8,309        
Recognized compensation expense     $ 224 243 295    
Restricted Stock [Member] | The 2006 Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Recognized compensation expense     290 201 374    
Unamortized compensation cost     1,284        
Fair Value of Restricted Stock Vesting     $ 353 571 528    
Weighted Avg Grant Date Fair Value of Unvested Restricted Stock     $ 8.31        
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 $ 505 $ 522          
Stock Option [Member] | The 2006 Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Recognized compensation expense     $ (45) 267 $ 110    
Unamortized compensation cost     83        
Intrinsic Value     $ 88 $ 57      
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 $ 18 $ 65