Goodwill and Other Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2016 USD ($)
Estimate of the amount and classification of amortization expense for definite-lived intangible assets
Amortization Expense, 2017	$ 3,556
Amortization Expense, 2018	3,226
Amortization Expense, 2019	2,979
Amortization Expense, 2020	2,528
Amortization Expense, 2021	1,427
Operations Expense, 2017	91
Operations Expense, 2018	91
Operations Expense, 2019	62
Operations Expense, 2020	57
Operations Expense, 2021	$ 56