Stockholders' Equity (Narratives) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended			3 Months Ended				6 Months Ended
	Apr. 08, 2014	Mar. 25, 2014	Jan. 29, 2013	May 31, 2014	Feb. 28, 2014	May 31, 2013	Feb. 28, 2013	May 31, 2014	May 31, 2013
Equity [Abstract]
Stock Issued During Period, Shares, New Issues	1,041,666	6,944,445	6,325,000
Common Stock, Par or Stated Value Per Share		$ 1.00	$ 1.00
Treasury Stock Acquired, Average Cost Per Share		$ 18.00	$ 18.25
Stock issued during period, shares, treasury stock reissued		7,986,111	6,325,000
Proceeds from issuance of common stock, net			$ 109,503					$ 137,045	$ 109,503
Common stock reserve, shares				12,602,735				12,602,735
Dividend paid in each quarter (in dollars per share)				$ 0.0250	$ 0.0250	$ 0.0250	$ 0.025	$ 0.05	$ 0.05
Debt Instrument [Line Items]
Number of common stock, authorized, approved under a board approved stock repurchase program				4,000,000				4,000,000