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Commitments and Contingent Liabilities (Tables)
 6 Months Ended
Aug. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Future minimum rental payments under noncancelable operating leases

Guarantees and warranties A warranty rollforward follows:  
 
 
Six Months Ended
In thousands
 
August 31, 2019
 
September 1, 2018
Balance at beginning of period
 
$
16,737

 
$
22,517

Additional accruals
 
3,606

 
2,087

Claims paid
 
(5,481
)
 
(4,580
)
Balance at end of period
 
$
14,862

 
$
20,024