Note 5 - Stock-based Compensation (Tables)

12 Months Ended

Mar. 01, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Fiscal Year
	2015			2014			2013
Weighted average fair value per share of option grants	$	8.05		$	8.79		$	8.56
Risk-free interest rates		2.03 - 2.18	%		1.64 - 2.15	%		1.50 - 1.80	%
Expected stock price volatility		31.07 - 31.59	%		32.80 - 34.00	%		35.02 - 37.06	%
Expected dividend yields		1.34 - 1.77	%		1.46 - 1.67	%		1.54 - 1.65	%
Estimated option terms (years)		7.8			6.1 - 8.1			5.7 - 6.9

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Outstanding Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Balance, February 26, 2012		915,951		$	25.40
Granted		205,520			25.60
Exercised		(35,987	)		21.16
Terminated or expired		(107,701	)		25.91
Balance, March 3, 2013		977,783		$	25.54
Granted		193,600			27.20
Exercised		(51,266	)		23.44
Terminated or expired		(39,000	)		26.07
Granted under option modification		902,517			23.13
Cancelled under option modification		(902,517	)		25.63
Balance, March 2, 2014		1,081,117		$	23.84
Granted		18,000			25.81
Exercised		(79,800	)		21.49
Terminated or expired		(52,625	)		24.21
Granted under option modification		996,892			22.55
Cancelled under option modification		(996,892	)		24.05
Balance, March 1, 2015		966,692		$	22.55		5.40	$	425
Vested and exercisable, March 1, 2015		694,705		$	22.23		4.27	$	528

Schedule of Nonvested Share Activity [Table Text Block]

	Shares Subject to Options			Weighted Average Grant Date Fair Value
Non-vested, beginning of year		416,788		$	8.41
Granted		18,000			8.05
Vested		(120,476	)		8.14
Terminated or expired		(42,325	)		8.06
Non-vested, end of year		271,987		$	8.27