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Lines of Credit and Paycheck Protection Program Loan - Narrative (Detail)
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2020
USD ($)
Aug. 02, 2020
USD ($)
May 02, 2021
USD ($)
Aug. 02, 2020
CNY (¥)
May 03, 2020
USD ($)
Apr. 15, 2020
USD ($)
Aug. 04, 2019
USD ($)
Line Of Credit Facility [Line Items]                
Outstanding amount [1]           $ 29,750,000    
Repayments of debt     $ 30,772,000          
Paycheck Protection Program (PPP) loan amount [1]           $ 7,606,000    
Paycheck Protection Program, CARES Act [Member]                
Line Of Credit Facility [Line Items]                
Paycheck Protection Program (PPP) loan amount             $ 7,600,000  
Revolving Credit Facility [Member] | United States [Member]                
Line Of Credit Facility [Line Items]                
Maximum borrowing capacity     $ 30,000,000          
Expiration date     Aug. 15, 2022          
Maximum amount of letters of credit     $ 1,000,000          
Applicable interest rate at end of period     1.75%   1.75% 1.75%   3.68%
Interest rate description     Interest is charged at a rate as a variable spread over LIBOR based on our ratio of debt to EBITDA.          
Reference rate on which the interest rate is based     LIBOR          
Percentage of common stock in subsidiary pledge as collateral     65.00%          
Outstanding amount     $ 0     $ 29,800,000   $ 0
Repayments of debt   $ 29,800,000            
Letters of credit, outstanding amount     250,000     $ 250,000   250,000
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member]                
Line Of Credit Facility [Line Items]                
Reduced percentage of allowable liens and other indebtedness   5.00%            
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member] | Maximum [Member]                
Line Of Credit Facility [Line Items]                
Maximum allowable payment of dividends or stock repurchase   $ 10,000,000            
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member] | Scenario Forecast [Member]                
Line Of Credit Facility [Line Items]                
Annual capital expenditures       $ 10,000,000        
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member] | Price Level I [Member]                
Line Of Credit Facility [Line Items]                
Percentage of pricing matrix increased 1.60%              
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member] | Price Level II [Member]                
Line Of Credit Facility [Line Items]                
Percentage of pricing matrix increased 2.05%              
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member] | Price Level III [Member]                
Line Of Credit Facility [Line Items]                
Percentage of pricing matrix increased 2.50%              
Revolving Credit Facility [Member] | United States [Member] | Seventh Amendment to Credit Agreement [Member] | Price Level IV [Member]                
Line Of Credit Facility [Line Items]                
Percentage of pricing matrix increased 3.00%              
Revolving Credit Facility [Member] | United States [Member] | Letters of Credit [Member]                
Line Of Credit Facility [Line Items]                
Remaining letters of credit     750,000          
Revolving credit agreement [Member] | China [Member]                
Line Of Credit Facility [Line Items]                
Maximum borrowing capacity     $ 5,700,000   ¥ 40,000,000      
Expiration date     Dec. 04, 2020          
Applicable interest rate at end of period           2.41%    
Interest rate description     This agreement has an interest rate determined by the Chinese government at the time of borrowing and is set to expire on December 4, 2020. As of May 3, 2020, there were outstanding borrowings under the agreement totaling $1.0 million, at an applicable interest rate of 2.41%.          
Outstanding amount     $ 0     $ 1,000,000.0   $ 0
Repayments of debt   $ 1,000,000.0            
[1] Derived from audited financial statements.