Employment Agreements and Retirement Plans - Additional Disclosures (Details) - age	1 Months Ended	12 Months Ended	27 Months Ended
	Jun. 30, 2014	Sep. 30, 2017	Sep. 30, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions matching vested in service			3 years
Contributions matching vested in pro rata basis		100.00%
Vesting period of Supplemental Executive Retirement Plan		3 years
SERP, percent vested per year		33.33%
SERP 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%
SERP vesting In event of participant reaching retirement age, percentage		100.00%
SERP, retirement age		60
SERP vesting In event of participant reaching retirement age, years of service		5 years
Executive Officer
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Additional severance or change-in-control benefits, period of salary continuation	1 year