Equity (Employee Stock Purchase Plan) (Details) - Employee stock purchase plan	6 Months Ended
	Mar. 31, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP offering period (months)	6 months
Purchase price (as percentage of market price)	85.00%
Annual contribution (as percentage of compensation)	10.00%
Annual contribution	$ 25,000