Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 12, 2019	May 31, 2019	Feb. 28, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Treasury stock, shares, acquired				8,830		16,056
Treasury stock, value				$ 604	$ 650	$ 1,091	$ 3,960
Treasury stock reissued				29,853		54,008
Cash Dividends per Share		$ 0.55	$ 0.55	$ 0.55	$ 0.55	$ 1.10	$ 1.10
Subsequent Event [Member]
Dividends payable, date declared	Jul. 12, 2019
Dividends declared (in dollars per share)	$ 0.55
Dividends payable, date of record	Jul. 22, 2019
Dividends payable, date to be paid	Aug. 12, 2019