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Equity (Schedule of Restricted Stock Activity) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Number of Shares  
Non-vested as of September 30, 2013 (in shares) 854,928
Restricted Stock Awards
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock awards, vesting period 3 years
Number of Shares  
Non-vested as of September 30, 2012 (in shares) 216,703
Granted (in shares) 0
Vested (in shares) (106,797)
Forfeited (in shares) (10,345)
Non-vested as of September 30, 2013 (in shares) 99,561
Weighted Average Grant Date Fair Value  
Non-vested as of September 30, 2012 (in dollars per share) $ 5.83
Granted (in dollars per share) $ 0.00
Vested (in dollars per share) $ 5.83
Forfeited (in dollars per share) $ 5.68
Non-vested as of September 30, 2013 (in dollars per share) $ 5.84
Restricted Stock Disclosures:  
Remaining unamortized stock-based compensation expense $ 0.2
Remaining unamortized stock-based compensation expense, period for recognition (in years) 0 years 3 months 18 days
Restricted Stock Units
 
Number of Shares  
Non-vested as of September 30, 2012 (in shares) 700,043
Granted (in shares) 530,700
Vested (in shares) (256,390)
Forfeited (in shares) (119,425)
Non-vested as of September 30, 2013 (in shares) 854,928
Weighted Average Grant Date Fair Value  
Non-vested as of September 30, 2012 (in dollars per share) $ 4.44
Granted (in dollars per share) $ 4.63
Vested (in dollars per share) $ 4.59
Forfeited (in dollars per share) $ 4.48
Non-vested as of September 30, 2013 (in dollars per share) $ 4.51
Restricted Stock Disclosures:  
Remaining unamortized stock-based compensation expense 2.4
Remaining unamortized stock-based compensation expense, period for recognition (in years) 1 year 9 months 18 days
Outstanding non-vested RSUs aggregate intrinsic value 3.8
Outstanding non-vested RSUs weighted average remaining contractual term (in years) 1 year 1 month 6 days
Share-based compensation arrangement, by share-based payment award, options, vested and expected to vest, exercisable, number 800,000
Share based compensation arrangement, by share based payment award, equity instruments other than options, expected to vest, intrinsic value $ 3.4
Share based compensation arrangement, by share based payment award, equity investments other than options, expected to vest, weighted average contractual term (in years) 1 year 0 months 0 days