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Credit Facility - Additional information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Jan. 03, 2023
Jan. 04, 2022
Oct. 01, 2020
Aug. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jul. 13, 2017
Line of Credit Facility [Line Items]                  
Payment of deferred financing costs         $ 64,000 $ 0 $ 223,000    
Deferred financing costs         284,000 293,000      
Repayments of debt         1,100,000 12,000,000 $ 4,400,000    
Revolving Line of Credit [Member]                  
Line of Credit Facility [Line Items]                  
Percentage of eligible accounts receivable               85.00%  
Revolving Line of Credit [Member] | United States [Member]                  
Line of Credit Facility [Line Items]                  
Percentage of eligible unbilled accounts               60.00%  
Revolving Line of Credit [Member] | Canada [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility maximum borrowing capacity         $ 10,000,000        
Percentage of eligible accounts receivable         85.00%        
Percentage of eligible unbilled accounts         60.00%        
Revolving Line of Credit [Member] | Line of Credit [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility maximum borrowing capacity               $ 5,000,000  
Revolving Line of Credit [Member] | Swing Loans [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility maximum borrowing capacity               $ 6,000,000  
Federal Funds Rate [Member]                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate         0.50%        
PNC Bank, N.A. [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility maximum borrowing capacity                 $ 53,100,000
Payment of deferred financing costs         $ 1,039,000        
PNC Bank, N.A. [Member] | Term Loan Facility [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility maximum borrowing capacity         0 1,100,000     13,100,000
Credit facility, periodic payment     $ 1,100,000            
Repayments of debt       $ 7,600,000          
Line of credit facility final amount $ 1,100,000                
PNC Bank, N.A. [Member] | Revolving Line of Credit [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility maximum borrowing capacity         $ 22,500,000 $ 31,800,000     $ 40,000,000
Maximum [Member]                  
Line of Credit Facility [Line Items]                  
Revolving credit facility percentage margin over base rate               1.25%  
Term loan percentage margin over base rate               2.50%  
Revolving credit facility percentage margin adjusted SOFR rate               2.25%  
Term loan percentage margin adjusted SOFR rate               3.50%  
Maximum [Member] | PNC Bank, N.A. [Member] | Revolving Line of Credit [Member]                  
Line of Credit Facility [Line Items]                  
Credit facility additional borrowing capacity upon certain conditions   $ 20,000,000              
Minimum [Member]                  
Line of Credit Facility [Line Items]                  
Revolving credit facility percentage margin over base rate               0.50%  
Term loan percentage margin over base rate               1.75%  
Revolving credit facility percentage margin adjusted SOFR rate               1.50%  
Term loan percentage margin adjusted SOFR rate               2.75%