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Segment Reporting - Additional Information (Detail)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Segment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Segment Reporting Information [Line Items]                      
Number of reportable segments | Segment                 3    
Revenue from sales to customers $ 147,082 $ 149,757 $ 135,630 $ 153,903 $ 152,929 $ 162,275 $ 154,341 $ 148,404 $ 586,372 $ 617,949 $ 559,157
Warehouse Management Product Group | Product Concentration Risk | Sales Revenue, Net                      
Segment Reporting Information [Line Items]                      
Percentage of software license revenue                 80.00%    
Americas                      
Segment Reporting Information [Line Items]                      
Americas royalty fees                 $ 3,800 4,500 4,200
Revenue from sales to customers                 465,939 489,834 445,486
Outside United States                      
Segment Reporting Information [Line Items]                      
Revenue from sales to customers                 $ 178,100 $ 189,100 $ 174,100