Income Taxes Net Operating Loss Carryforwards (Details) $ in Millions	Sep. 30, 2016 USD ($)
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 6.6
Expiring between 2028 and 2032 [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	4.7
Expiring beginning in 2028 [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	3.0
Federal Tax Credit Carryforward, Amount	9.5
Expiring between 2015 and 2027 [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 1.9