Stockholders' Equity (Narratives) (Details) - $ / shares	3 Months Ended
	Sep. 30, 2018	Jun. 30, 2018
Dividend Declared One
Dividends Declared
Dividends payable, date declared	Aug. 23, 2018
Dividends payable, amount per share	$ 0.5
Dividends payable, date of record	Sep. 10, 2018
Dividends payable, date to be paid	Sep. 24, 2018
Dividend Declared Two
Dividends Declared
Dividends payable, date declared	Jun. 06, 2018
Dividends payable, amount per share	$ 0.5
Dividends payable, date of record	Jun. 21, 2018
Dividends payable, date to be paid	Jul. 05, 2018
Dividend Declared Three
Dividends Declared
Dividends payable, date declared		Mar. 08, 2018
Dividends payable, amount per share		$ 0.5
Dividends payable, date of record		Mar. 23, 2018
Dividends payable, date to be paid		Apr. 06, 2018