Components of Net Periodic Benefit Costs (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
May. 30, 2015 |
May. 31, 2014 |
|
| Components of net periodic benefit cost: | ||
| Service cost | $ 367 | $ 351 |
| Interest cost | 158 | 206 |
| Amortization of unrecognized prior service cost | 15 | 102 |
| Amortization of net actuarial loss | 349 | 332 |
| Net periodic benefit cost | $ 889 | $ 991 |