Summary of Significant Accounting Policies (Inventories) (Details)	Sep. 30, 2017	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of weighted average cost inventory	55.00%	50.00%

The percentage of weighted average cost inventory present at the reporting date when inventory is valued using different valuation methods.

No definition available.

Name:	us-gaap_PercentageOfWeightedAverageCostInventory
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant