Retirement Plans - Additional Disclosures (Details) - age	9 Months Ended	12 Months Ended	27 Months Ended
	Jun. 30, 2013	Sep. 30, 2015	Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Contributions matching vested in service	5 years		3 years
Contributions matching vested in pro rata basis		100.00%
Vesting period of Supplemental Executive Retirement Plan		3 years
Supplemental Executive Retirement Plan, percent vested per year		33.33%
Supplemental Executive Retirement Plan vesting in the event of the participant's death or disability or the termination of the plan due to a change in control		100.00%
Supplemental Executive Retirement Plan vesting In event of participant reaching retirement age, percentage		100.00%
Supplemental Executive Retirement Plan, retirement age		60
Supplemental Executive Retirement Plan vesting In event of participant reaching retirement age, years of service		5 years