Significant accounting policies (Tables)
 12 Months Ended
Mar. 28, 2020
Accounting Policies [Abstract]  
Estimated Useful Lives of Assets Depreciation and amortization are computed using the straight-line method based on the estimated useful lives of the assets as follows:
 
Asset
  
Period
Leasehold improvements  Lesser of term of the lease or the economic life
Software and electronic equipment  1 - 6 years
Furniture and fixtures  5 - 8 years
Equipment  3 - 8 years
Basic and Diluted Earnings Per Common Share
The following table sets forth the computation of basic and diluted (loss) earnings per common share for the years ended March 28, 2020, March 30, 2019, and March 31, 2018:
 
 
  
Fiscal Year Ended
 
 
  
March 28, 2020
 
  
March 30, 2019
 
  
March 31, 2018
 
 
  
(In thousands, except per share data)
 
Basic (loss) income per common share computation:
  
   
  
   
  
   
Numerator:
  
   
  
   
  
   
Net (loss) income
  
$
(12,779
) 
  
$
(18,686
) 
  
$
14,095
 
Denominator:
  
   
  
   
  
   
Weighted-average common shares outstanding
  
 
17,968
 
  
 
17,961
 
  
 
17,961
 
(Loss) income per common share
  
$
(0.71
) 
  
$
(1.04
) 
  
$
0.78
 
Diluted (loss) income per common share computation:
  
   
  
   
  
   
Numerator:
  
   
  
   
  
   
Net (loss) income
  
$
(12,779
) 
  
$
(18,686
) 
  
$
14,095
 
Denominator:
  
   
  
   
  
   
Weighted-average common shares outstanding
  
 
17,968
 
  
 
17,961
 
  
 
17,961
 
Dilutive effect of stock options and warrants
  
 
—  
 
  
 
—  
 
  
 
432
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Weighted-average common shares outstanding – diluted
  
 
17,968
 
  
 
17,961
 
  
 
18,393
 
Diluted (loss) income per common share
  
$
(0.71
) 
  
$
(1.04
) 
  
$
0.77
 
The following table sets forth the computation of basic and diluted (loss) earnings from continuing operations per common share for the years ended March 28, 2020, March 30, 2019, and March 31, 2018:
 
 
  
Fiscal Year Ended
 
 
  
March 28, 2020
 
  
March 30, 2019
 
  
March 31, 2018
 
 
  
(In thousands, except per share data)
 
Basic (loss) from continuing operations per common share computation:
  
   
  
   
  
   
Numerator:
  
   
  
   
  
   
Net loss from continuing operations
  
$
(12,227
) 
  
$
(18,305
) 
  
$
(21,995
) 
Denominator:
  
   
  
   
  
   
Weighted-average common shares outstanding
  
 
17,968
 
  
 
17,961
 
  
 
17,961
 
Loss per common share
  
$
(0.68
) 
  
$
(1.02
) 
  
$
(1.22
) 
Diluted income per common share computation:
  
   
  
   
  
   
Numerator:
  
   
  
   
  
   
Net loss
  
$
(12,227
) 
  
$
(18,305
) 
  
$
(21,995
) 
Denominator:
  
   
  
   
  
   
Weighted-average common shares outstanding
  
 
17,968
 
  
 
17,961
 
  
 
17,961
 
Dilutive effect of stock options and warrants
  
 
—  
 
  
 
—  
 
  
 
432
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Weighted-average common shares outstanding – diluted
  
 
17,968
 
  
 
17,961
 
  
 
18,393
 
Diluted loss per common share
  
$
(0.68
) 
  
$
(1.02
) 
  
$
(1.20
)