Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Dividends, Common Stock	$ (367,767)	$ (320,666)	$ (204,463)
Common Stock Dividends Declared (in dollars per share)	$ 0.670	$ 0.585	$ 0.375