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Stock Option Plans Option Activity (Details) (Stock Options [Member], USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Sep. 30, 2012
Stock Options [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Options outstanding at beginning of period 2,741,240
Options granted 3,000
Options exercised (28,389)
Options forfeited (415,745)
Options outstanding at end of period 2,300,106
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]  
Options outstanding, weighted average exercise price at beginning of period $ 19.97
Options granted, weighted average exercise price $ 17.07
Options exercised, weighted average exercise price $ 12.57
Options forfeited, weighted average exercise price $ 16.92
Options outstanding, weighted average exercise price at end of period $ 20.60
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]  
Options exercisable 1,685,834
Options exercisable, weighted average exercise price $ 21.69
Options outstanding, weighted average remaining contractual term 4 years
Options exercisable, weighted average remaining contractual term 3 years
Options outstanding, aggregate intrinsic value $ 1,269
Options exercisable, aggregate intrinsic value $ 602