XML 71 R57.htm IDEA: XBRL DOCUMENT v3.22.4
Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Goodwill And Intangible Asset [Line Items]      
Goodwill, acquired during period $ 13,807,000 $ 2,168,000  
Goodwill, accumulated impairment loss 1,003,000 1,003,000  
Goodwill, impairment loss 0 0 $ 0
Intangible assets net excluding goodwill 31,742,000 5,115,000  
Amortization of intangible assets 3,600,000 $ 1,600,000 3,000,000.0
DZS GmbH (formerly Keymile Gmbh)      
Goodwill And Intangible Asset [Line Items]      
Intangibles impairment charge     6,500,000
DZS GmbH (formerly Keymile Gmbh) | Developed Technology      
Goodwill And Intangible Asset [Line Items]      
Intangibles impairment charge     3,300,000
DZS GmbH (formerly Keymile Gmbh) | Customer Relationships      
Goodwill And Intangible Asset [Line Items]      
Intangibles impairment charge     2,300,000
DZS GmbH (formerly Keymile Gmbh) | In-Process Research And Development      
Goodwill And Intangible Asset [Line Items]      
Intangibles impairment charge     $ 900,000
ASSIA      
Goodwill And Intangible Asset [Line Items]      
Goodwill, acquired during period 13,800,000    
ASSIA | Developed Technology      
Goodwill And Intangible Asset [Line Items]      
Intangible assets net excluding goodwill 6,200,000    
ASSIA | Customer Relationships      
Goodwill And Intangible Asset [Line Items]      
Intangible assets net excluding goodwill 18,600,000    
ASSIA | Orders Backlog      
Goodwill And Intangible Asset [Line Items]      
Intangible assets net excluding goodwill 5,100,000    
ASSIA | Tradenames      
Goodwill And Intangible Asset [Line Items]      
Intangible assets net excluding goodwill $ 300,000