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Organization, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Jan. 01, 2019
USD ($)
Dec. 31, 2019
USD ($)
Customer
ServiceProvider
Institution
Dec. 31, 2018
USD ($)
Customer
ServiceProvider
Dec. 31, 2016
USD ($)
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Number of customers concentrated | Customer   1 1  
Number of service providers concentrated | ServiceProvider   1 1  
Financial institutions to held securities | Institution   1    
Cash and cash equivalents original maturity dates   Three months or less    
Bank balances   $ 28,000,000 $ 11,800,000  
Costs capitalized   $ 0    
Substantial doubt about going concern, management's evaluation   In connection with preparing consolidated financial statements for the year ended December 31, 2019, management evaluated whether there were conditions and events, considered in the aggregate, that raised substantial doubt about the Company’s ability to continue as a going concern within one year from the date that the financial statements are issued. The Company considered the historical operating loss and negative cash flow from operating activities trends, including the positive trends occurring in the recent year. The Company evaluated its ability to meet its obligations as they become due within one year from the date that the financial statements are issued and management believes that the Company will generate enough cash from operations to satisfy its obligations for the next twelve months from the issuance date.    
Net lease assets   $ 6,464,000    
Lease liabilities   6,995,000    
Adjustment to retained earnings   93,000    
ASC 842 [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Net lease assets $ 3,100,000      
Lease liabilities 3,100,000      
Adjustment to retained earnings $ 100,000      
Graphics [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Total sales incentives   $ 16,000 $ 100,000  
Customer Relationships Intangible Asset [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Asset impairment charges       $ 400,000
Customer Concentration Risk [Member] | Revenues [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Concentration percentage   84.00% 81.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Concentration percentage   92.00% 82.00%  
Supplier concentration risk [Member] | Accounts payable [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Concentration percentage   10.00% 21.00%  
Minimum [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Estimated useful lives of the assets   3 years    
Intangible assets and amortization, useful life   2 years    
Minimum [Member] | Customer Concentration Risk [Member] | Revenues [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Concentration percentage   10.00% 10.00%  
Minimum [Member] | Supplier concentration risk [Member] | Purchase [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Concentration percentage   10.00% 10.00%  
Maximum [Member]        
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]        
Estimated useful lives of the assets   7 years    
Intangible assets and amortization, useful life   10 years