Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	May 02, 2018	Apr. 04, 2017
Class of Stock [Line Items]
Common stock, par value	$ 0.2	$ 0.2
Common stock, shares issued	55,443,393	54,055,600
Proceeds from common stock issued, net of issue costs	$ 0	$ 0	$ 18,623
At-the-Market Common Stock Program [Member]
Class of Stock [Line Items]
Common stock, par value						$ 0.20
Aggregate Offering Price						$ 100,000
Commission of the gross sales price by share paid percentage						2.00%
Common stock, shares issued				787,547	787,547