CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares				12 Months Ended
	Feb. 03, 2015	Feb. 06, 2014	Feb. 07, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in dollars per share)	$ 0.23	$ 0.20	$ 0.19	$ 0.23	$ 0.20	$ 0.19