Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended			146 Months Ended
	Oct. 31, 2008	Jan. 31, 2008	Feb. 27, 2016	Feb. 28, 2015	Mar. 01, 2014	Feb. 27, 2016	Feb. 28, 2004
Class of Stock [Line Items]
Junior preferred stock, shares			200,000			200,000
Junior preferred stock par value			$ 1.00			$ 1.00
Share repurchases, shares			(575,000)	(203,000)
Preferred Stock, Shares Outstanding			0			0
Stock Based Compensation Plans
Class of Stock [Line Items]
Adjustments Related to Tax Withholding for Share-based Compensation			$ 5,100	$ 5,200	$ 3,600
Share Repurchase Program
Class of Stock [Line Items]
Number of shares authorized under share repurchase program							1,500,000
Increase in authorized shares under the share repurchase program	1,000,000	750,000	1,000,000
Share repurchases, shares			575,000	203,509	0	3,057,632
Share repurchases, value			$ 24,900	$ 6,900		$ 61,500
Remaining shares authorized to be repurchased			1,192,368,000			1,192,368,000