Consolidated Condensed Statements of Equity (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Common stock repurchased	$ 4,953	$ 89,698	[1]
Preferred stock - cash dividends declared per share	$ 3,100	$ 3,100
Common stock - cash dividends declared per share	$ 0.18	$ 0.14
Stock Repurchase Authorization
Common stock repurchased		$ 86,400

[1] 2016 includes $86.4 million repurchased under share repurchase programs.