XML 59 R48.htm IDEA: XBRL DOCUMENT v3.20.2
Stock-Based Compensation - Additional Information (Detail)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 01, 2020
USD ($)
shares
Aug. 01, 2020
USD ($)
shares
Aug. 03, 2019
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock unit vesting and settlement ratio to common shares   1  
Restricted-Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost, net of estimated forfeitures, related to nonvested restricted stock units | $ $ 6.7 $ 6.7  
Total unrecognized compensation cost, net of estimated forfeitures, related to nonvested restricted stock units, weighted-average period of recognition 2 years 1 month 6 days    
Time-based Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted-stock awards/units granted in period   810,000  
Performance-based Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted-stock awards/units granted in period   602,000  
Restricted stock units vesting period, years   3 years  
2010 Equity and Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Issuance of common stock shares 6,076,001 6,076,001  
2010 Equity and Incentive Plan [Member] | Restricted-Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted-stock awards/units granted in period   1,412,024 407,264
Restricted-stock awards/units with an aggregate grant-date fair value | $   $ 5.8 $ 5.3
Non-Employee Director [Member] | Restricted-Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock units vesting period, years   1 year