Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share Repurchases [Abstract]
Number of Shares Authorized to be Repurchased	3,300		3,300
Treasury Stock, Shares, Acquired	0	0		900
Dividends, Common Stock, Cash	$ 1,700	$ 1,700	$ 5,000	$ 5,000