Retirement Plans (Details 2) (Recurring, USD $) In Thousands, unless otherwise specified	Mar. 01, 2014	Mar. 02, 2013
Significant Observable Inputs (Level 2)
Fair Value Measurements
Total assets at fair value	$ 128,985	$ 114,773
Significant Observable Inputs (Level 2) | International equity
Fair Value Measurements
Total assets at fair value	20,401	17,199
Significant Observable Inputs (Level 2) | Large Cap
Fair Value Measurements
Total assets at fair value	40,914	35,098
Significant Observable Inputs (Level 2) | Small-Mid Cap
Fair Value Measurements
Total assets at fair value	18,071
Significant Observable Inputs (Level 2) | Mid Cap
Fair Value Measurements
Total assets at fair value		12,562
Significant Observable Inputs (Level 2) | Small Cap
Fair Value Measurements
Total assets at fair value		4,236
Significant Observable Inputs (Level 2) | Long Term Credit Bond Index
Fair Value Measurements
Total assets at fair value	47,360	45,664
Significant Observable Inputs (Level 2) | Short Term Investments
Fair Value Measurements
Total assets at fair value	2,239	14
Total
Fair Value Measurements
Total assets at fair value	128,985	114,773
Total | International equity
Fair Value Measurements
Total assets at fair value	20,401	17,199
Total | Large Cap
Fair Value Measurements
Total assets at fair value	40,914	35,098
Total | Small-Mid Cap
Fair Value Measurements
Total assets at fair value	18,071
Total | Mid Cap
Fair Value Measurements
Total assets at fair value		12,562
Total | Small Cap
Fair Value Measurements
Total assets at fair value		4,236
Total | Long Term Credit Bond Index
Fair Value Measurements
Total assets at fair value	47,360	45,664
Total | Short Term Investments
Fair Value Measurements
Total assets at fair value	$ 2,239	$ 14