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Benefit Plans Components of Benefit Plans (Details) (USD $)
 0 Months Ended 9 Months Ended
Jun. 30, 2014
Jun. 30, 2014
plans
Defined Benefit Plan Disclosure    
Number of defined benefit plans   1
Number of defined contribution plans   1
Number of unfunded post-retirement health care plans   2
Defined Contribution Plan, Automatic Employer Contribution 4.50%  
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent $ 0.75  
Maximum
    
Defined Benefit Plan Disclosure    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 4.50%