Dividends (Details) - $ / shares		3 Months Ended		12 Months Ended
	Jul. 17, 2019	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019
Dividends [Abstract]
Common stock, dividends, per share, declared (in dollars per share)		$ 0.11	$ 0.10
2019 Q4 Dividend [Member]
Dividends [Abstract]
Dividends payable, date declared		Jul. 17, 2019
Common stock, dividends, per share, declared (in dollars per share)	$ 0.11
Percentage of increase in cash dividend rate	10.00%
Dividends payable, date of record		Aug. 15, 2019
Dividends payable, date paid		Aug. 30, 2019
2020 Annual Dividend [Member]
Dividends [Abstract]
Common stock, dividends, per share, declared (in dollars per share)	$ 0.44
2019 Annual Dividend [Member]
Dividends [Abstract]
Common stock, dividends, per share, declared (in dollars per share)				$ 0.40