Equity and Dividends (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended
	Nov. 09, 2016	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Preferred shares issued				0		0
Stock repurchased during period, shares		1,460,000	1,900,000	0	0	0	0
Stock repurchased during period, per share		$ 25.16	$ 24.98
Intra-entity foreign currency transactions				$ 958	$ (4,609)	$ 9,569	$ (16,136)
Subsequent Event [Member]
Dividends Payable [Line Items]
Dividends declared (usd per share)	$ 0.17
Payment date	Dec. 19, 2016
Record date	Nov. 28, 2016