Supporting Financial Information - Intangible Assets Amortization Expense (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Finite-Lived Intangible Asset, Useful Life	10 years
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 1,762
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,762
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,762
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,762
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,762
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	7,639
Finite-Lived Intangible Assets, Net	16,449
Amortization of Intangible Assets	$ 324