Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 01, 2014	Mar. 02, 2013
Cash equivalents
Total cash equivalents	$ 12,788	$ 17,639
Available for sale securities
Total available for sale securities	11,477	38,814
Restricted investments
Total restricted investments	2,540	26,443
Mutual fund investments
Total mutual fund investments	409	251
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	98
Total assets at fair value	27,312	83,147
Derivative Instruments and Hedges, Liabilities (Abstract)
Total liabilities at fair value		405
Money market funds
Cash equivalents
Total cash equivalents	12,788	17,639
Restricted investments
Total restricted investments	2,540	26,443
Municipal bonds
Available for sale securities
Total available for sale securities	11,477	38,814
Mutual funds
Mutual fund investments
Total mutual fund investments	409	251
Foreign Exchange Contract [Member]
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	98
Derivative Instruments and Hedges, Liabilities (Abstract)
Foreign Currency Contracts, Liability, Fair Value Disclosure		405
Quoted Prices in Active Markets (Level 1)
Cash equivalents
Total cash equivalents	12,788	17,639
Available for sale securities
Total available for sale securities	0	0
Restricted investments
Total restricted investments	2,540	26,443
Mutual fund investments
Total mutual fund investments	409	251
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	0
Total assets at fair value	15,737	44,333
Derivative Instruments and Hedges, Liabilities (Abstract)
Total liabilities at fair value		0
Quoted Prices in Active Markets (Level 1) | Money market funds
Cash equivalents
Total cash equivalents	12,788	17,639
Restricted investments
Total restricted investments	2,540	26,443
Quoted Prices in Active Markets (Level 1) | Municipal bonds
Available for sale securities
Total available for sale securities	0	0
Quoted Prices in Active Markets (Level 1) | Mutual funds
Mutual fund investments
Total mutual fund investments	409	251
Quoted Prices in Active Markets (Level 1) | Foreign Exchange Contract [Member]
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	0
Derivative Instruments and Hedges, Liabilities (Abstract)
Foreign Currency Contracts, Liability, Fair Value Disclosure		0
Other Observable Inputs (Level 2)
Cash equivalents
Total cash equivalents	0	0
Available for sale securities
Total available for sale securities	11,477	38,814
Restricted investments
Total restricted investments	0	0
Mutual fund investments
Total mutual fund investments	0	0
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	98
Total assets at fair value	11,575	38,814
Derivative Instruments and Hedges, Liabilities (Abstract)
Total liabilities at fair value		405
Other Observable Inputs (Level 2) | Money market funds
Cash equivalents
Total cash equivalents	0	0
Restricted investments
Total restricted investments	0	0
Other Observable Inputs (Level 2) | Municipal bonds
Available for sale securities
Total available for sale securities	11,477	38,814
Other Observable Inputs (Level 2) | Mutual funds
Mutual fund investments
Total mutual fund investments	0	0
Other Observable Inputs (Level 2) | Foreign Exchange Contract [Member]
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	98
Derivative Instruments and Hedges, Liabilities (Abstract)
Foreign Currency Contracts, Liability, Fair Value Disclosure		405
Unobservable Inputs (Level 3)
Cash equivalents
Total cash equivalents	0	0
Available for sale securities
Total available for sale securities	0	0
Restricted investments
Total restricted investments	0	0
Mutual fund investments
Total mutual fund investments	0	0
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	0
Total assets at fair value	0	0
Derivative Instruments and Hedges, Liabilities (Abstract)
Total liabilities at fair value		0
Unobservable Inputs (Level 3) | Money market funds
Cash equivalents
Total cash equivalents	0	0
Restricted investments
Total restricted investments	0	0
Unobservable Inputs (Level 3) | Municipal bonds
Available for sale securities
Total available for sale securities	0	0
Unobservable Inputs (Level 3) | Mutual funds
Mutual fund investments
Total mutual fund investments	0	0
Unobservable Inputs (Level 3) | Foreign Exchange Contract [Member]
Derivative Instruments and Hedges, Assets [Abstract]
Foreign Currency Contract, Asset, Fair Value Disclosure	0
Derivative Instruments and Hedges, Liabilities (Abstract)
Foreign Currency Contracts, Liability, Fair Value Disclosure		$ 0