Bank Debt (Amended Credit Facility Maximum Leverage Ratio) (Details)	Mar. 31, 2019	Sep. 30, 2018
Line of Credit Facility [Line Items]
Leverage Ratio	212.00%
Maximum [Member] | March 31, 2019 [Member]
Line of Credit Facility [Line Items]
Leverage Ratio		375.00%
Maximum [Member] | June 30, 2019 and September 30, 2019 [Member]
Line of Credit Facility [Line Items]
Leverage Ratio		350.00%
Maximum [Member] | December 31, 2019 through September 30, 2020 [Member]
Line of Credit Facility [Line Items]
Leverage Ratio		325.00%
Maximum [Member] | December 31, 2020 through September 30, 2021 [Member]
Line of Credit Facility [Line Items]
Leverage Ratio		300.00%
Maximum [Member] | December 31, 2021 and Each Fiscal Quarter Thereafter [Member]
Line of Credit Facility [Line Items]
Leverage Ratio		275.00%