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Basis of Presentation - Stock-Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Effect on income before income taxes (1) $ (433) [1] $ (465) [1]
Effect on income taxes 62 117
Effect on net income $ (371) $ (348)
Restricted Stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Beginning Outstanding (in shares) 127,975 120,970
Awarded (in shares) 0 60,600
Released (in shares) (55,646) (47,014)
Forfeited (in shares) (50) 0
Ending Outstanding (in shares) 72,279 134,556
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]    
Beginning Outstanding, Weighted Average Grant Date Fair Value (usd per share) $ 9.06 $ 9.42
Awarded, Weighted Average Grant Date Fair Value (usd per share) $ 0.00 $ 7.98
Released, Weighted Average Grant Date Fair Value (usd per share) $ 7.65 $ 8.53
Forfeited, Weighted Average Grant Date Fair Value (usd per share) $ 7.98 $ 0
Ending Outstanding, Weighted Average Grant Date Fair Value (usd per share) $ 10.15 $ 9.09
Restricted Stock [Member] | Maximum [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option vesting period (in years) 4 years  
Restricted Stock [Member] | Minimum [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option vesting period (in years) 2 years  
Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Outstanding at beginning of period (in shares) 891,293 611,384
Granted (in shares) 312,850 288,400
Exercised (in shares) 0 (50)
Forfeited (in shares) (1,085) 0
Outstanding at end of period (in shares) 1,203,058 899,734
Exercisable at end of period (in shares) 597,545 366,216
Weighted average fair value of options granted during the period (usd per share) $ 1.82 $ 4.95
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Outstanding at beginning of period, Weighted Average Exercise Price (usd per share) $ 9.37 $ 10.02
Granted, Weighted Average Exercise Price (usd per share) $ 2.95 $ 7.98
Exercised, Weighted Average Exercise Price (usd per share) $ 0.00 $ 6.15
Forfeited, Weighted Average Exercise Price (usd per share) $ 7.64 $ 0.00
Outstanding at end of period, Weighted Average Exercise Price (usd per share) $ 7.71 $ 9.37
Exercisable at end of period, Weighted Average Exercise Price (usd per share) $ 9.19 $ 9.18
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Risk free interest rate 1.00% 1.00%
Expected life (in years) 6 years 6 years
Dividend rate 0.00% 0.00%
Volatility 70.00% 70.00%
Stock Options [Member] | Maximum [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option expiration period (in years) 10 years  
Option vesting period (in years) 4 years  
Stock Options [Member] | Minimum [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option vesting period (in years) 2 years  
[1] Stock-based compensation expense is included in selling, general and administrative expenses.