Stock Compensation (PSU Performance and Vesting Terms ) (Details 3) - Performance Share Units	3 Months Ended
	Dec. 31, 2020 $ / shares
Tier 0
Stock Compensation
Cumulative percentage of PSUs that become vested	0.00%
Tier 1
Stock Compensation
Cumulative percentage of PSUs that become vested	25.00%
Tier 2
Stock Compensation
Cumulative percentage of PSUs that become vested	50.00%
Tier 3
Stock Compensation
Cumulative percentage of PSUs that become vested	75.00%
Tier 4
Stock Compensation
Cumulative percentage of PSUs that become vested	100.00%
Minimum | Tier 1
Stock Compensation
Stock price threshold per share	$ 18.75
Minimum | Tier 2
Stock Compensation
Stock price threshold per share	21.00
Minimum | Tier 3
Stock Compensation
Stock price threshold per share	23.25
Minimum | Tier 4
Stock Compensation
Stock price threshold per share	25.75
Maximum | Tier 0
Stock Compensation
Stock price threshold per share	$ 18.74