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Major customers accounted for at least 10% of total revenues (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Ingram Micro Inc.        
Percent of total revenues 29.00% 41.00% 33.00% 42.00%
Threshold percentage for disclosure 10.00% 10.00% 10.00% 10.00%
BlueStar, Inc.        
Percent of total revenues 25.00% 18.00% 20.00% 19.00%
Threshold percentage for disclosure 10.00% 10.00% 10.00% 10.00%
ScanSource, Inc.        
Percent of total revenues 14.00% 10.00%
Threshold percentage for disclosure 10.00% 10.00% 10.00% 10.00%