Goodwill and Other Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2015 USD ($)
Estimate of the amount and classification of amortization expense for definite-lived intangible assets
Amortization Expense, 2016	$ 7,052
Amortization Expense, 2017	5,809
Amortization Expense, 2018	5,328
Amortization Expense, 2019	2,820
Amortization Expense, 2020	2,348
Operations Expense, 2016	106
Operations Expense, 2017	106
Operations Expense, 2018	106
Operations Expense, 2019	78
Operations Expense, 2020	72
Interest Expense, 2016	2,985
Interest Expense, 2017	2,391
Interest Expense, 2018	2,320
Interest Expense, 2019	1,472
Interest Expense, 2020	$ 3