Retirement Plans - Fair Value (Details) - Recurring - USD ($) $ in Thousands	Mar. 02, 2019	Mar. 03, 2018
Retirement Plans
Total assets at fair value	$ 124,832	$ 130,860
International equity
Retirement Plans
Total assets at fair value	15,396	18,043
Large Cap
Retirement Plans
Total assets at fair value	34,058	35,491
Small-Mid Cap
Retirement Plans
Total assets at fair value	14,534	15,510
Long Term Credit Bond Index
Retirement Plans
Total assets at fair value	44,103	46,222
Long Term US Government Bonds
Retirement Plans
Total assets at fair value	8,383	8,070
20+ Year Treasury STRIPS
Retirement Plans
Total assets at fair value	847	1,168
Intermediate Fixed Income
Retirement Plans
Total assets at fair value	5,920	5,617
Short Term Investments
Retirement Plans
Total assets at fair value	$ 1,591	$ 739