Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.20.1
Income Taxes - Additional Information (Detail) - USD ($)
9 Months Ended 12 Months Ended
Mar. 27, 2020
Mar. 26, 2020
Dec. 31, 2017
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Income Taxes [Line Items]            
Valuation allowance       $ 5,319,000 $ 4,917,000  
Liability unrecognized tax benefits       $ 0 0  
Percentage of business interest limitation 50.00% 30.00%        
Percentage of corporate income tax rate     35.00% 21.00%    
Income tax benefit from remeasurement of deferred tax assets and liabilities           $ 971,000
One-time transition tax on accumulated foreign earnings           $ 185,000
Tax related to global intangible low-taxed income       $ (1,000) 11,000  
Foreign derived intangible income (FDII) effective tax rate     13.125%      
Incremental U.S. tax savings on foreign derived intangible income       95,000 69,000  
Investment Tax Credit Carryforward [Member]            
Income Taxes [Line Items]            
Deferred income taxes include the impact of state investment tax credits       314,000    
State investment tax credits with an unlimited carryforward period       794,000    
International Tax Jurisdictions [Member]            
Income Taxes [Line Items]            
Net operating loss       $ 301,000    
International Tax Jurisdictions [Member] | India [Member]            
Income Taxes [Line Items]            
Open tax year       2019    
International Tax Jurisdictions [Member] | Earliest Tax Year [Member]            
Income Taxes [Line Items]            
Net operating loss, expiration date       Mar. 31, 2022    
Open tax year       2016    
International Tax Jurisdictions [Member] | Latest Tax Year [Member]            
Income Taxes [Line Items]            
Net operating loss, expiration date       Mar. 31, 2024    
Open tax year       2019    
International Tax Jurisdictions [Member] | Other Assets [Member]            
Income Taxes [Line Items]            
Deferred income tax asset       $ 48,000 37,000  
State Tax Jurisdictions [Member] | Earliest Tax Year [Member]            
Income Taxes [Line Items]            
Open tax year       2015    
State Tax Jurisdictions [Member] | Latest Tax Year [Member]            
Income Taxes [Line Items]            
Open tax year       2019    
State Tax Jurisdictions [Member] | Assets Held for Sale [Member]            
Income Taxes [Line Items]            
Deferred income tax asset         126,000  
Net operating loss carryforwards, valuation allowance         $ 34,000  
Federal Tax Jurisdictions [Member] | Earliest Tax Year [Member]            
Income Taxes [Line Items]            
Open tax year       2016    
Federal Tax Jurisdictions [Member] | Latest Tax Year [Member]            
Income Taxes [Line Items]            
Open tax year       2019    
Maximum [Member] | Investment Tax Credit Carryforward [Member]            
Income Taxes [Line Items]            
Expiration date of state investment tax credits       Mar. 31, 2034    
Minimum [Member] | Investment Tax Credit Carryforward [Member]            
Income Taxes [Line Items]            
Expiration date of state investment tax credits       Mar. 31, 2021