Stock-Based Compensation, (Performance Shares) (Details) - Aug. 01, 2015 - $ / shares	Total
Performance Shares [Member]
Performance Shares [Abstract]
Beginning Balance (in shares)	284,403
Target Shares Granted (in shares)	227,685
Ending Balance (in shares)	512,088
Performance Share Grant 2012 [Member]
Performance Shares [Abstract]
Target Shares Vested (in shares)	(221,182)
Performance Share Grant 2013 [Member]
Performance Shares [Abstract]
Beginning Balance (in shares)	118,250
Ending Balance (in shares)	118,250
Weighted Average Grant Date Fair Value per Share (in dollars per share)	$ 33.81
Performance Share Grant 2014 [Member]
Performance Shares [Abstract]
Beginning Balance (in shares)	166,153
Ending Balance (in shares)	166,153
Weighted Average Grant Date Fair Value per Share (in dollars per share)	$ 33.84
Performance Share Grant 2015 [Member]
Performance Shares [Abstract]
Target Shares Granted (in shares)	227,685
Ending Balance (in shares)	227,685
Weighted Average Grant Date Fair Value per Share (in dollars per share)	$ 28.33