Stockholders' Equity (Schedule of Dividend Increases) (Details) - $ / shares	1 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Stockholders' Equity Note [Abstract]
Common stock, dividends, rate increase, percent	20.00%	39.00%
Quarterly Common Stock Cash Dividend	$ 0.30	$ 0.25
Annual Common Stock Cash Dividend	$ 1.20	$ 1.00