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Earnings Per Share - Additional Information (Detail)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 23, 2017
Sep. 08, 2017
USD ($)
shares
Oct. 28, 2017
shares
Oct. 29, 2016
shares
Oct. 28, 2017
shares
Oct. 29, 2016
shares
Earnings Per Share Diluted [Line Items]            
Reverse stock split ratio 0.10          
Number of anti-dilutive securities | shares     183,566 76,443 189,060 72,362
Common Stock [Member]            
Earnings Per Share Diluted [Line Items]            
Reverse stock split ratio 0.10          
2017 Rights Offering and 2017 Investment Agreement [Member] | Prior to Reverse Stock Split [Member]            
Earnings Per Share Diluted [Line Items]            
Common stock issuance, shares | shares   66,666,667        
2017 Rights Offering and 2017 Investment Agreement [Member] | Prior to Reverse Stock Split [Member] | Common Stock [Member]            
Earnings Per Share Diluted [Line Items]            
Stock issuance, increases | $   $ 667        
2017 Rights Offering and 2017 Investment Agreement [Member] | Prior to Reverse Stock Split [Member] | Additional Paid-in-Capital [Member]            
Earnings Per Share Diluted [Line Items]            
Stock issuance, increases | $   $ 28,338