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Stock-Based Compensation (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Sep. 30, 2012
ShareBasedCompensationPlan
Sep. 30, 2011
Sep. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of plans 3    
Shares reserved for issuance under Incentive Compensation Plan 500,000    
Total intrinsic value of options exercised $ 34 $ 73 $ 1,062
Income tax benefit from exercise of stock options 13 27 388
Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense related to restricted share awards 3,726    
Unrecognized compensation expense expected to be recognize, years 1 year 5 months 1 day    
Total fair value of shares vested $ 1,593 $ 1,623 $ 199
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Contractual Term 10 years    
Minimum [Member] | Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 6 months    
Minimum [Member] | Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 0 years    
Maximum [Member] | Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years    
Maximum [Member] | Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years