Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 5,471	$ 6,425	$ 15,542	$ 18,112
North America
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,418	4,290	10,081	11,938
Europe
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,706	1,850	4,449	5,325
Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	347	285	1,012	849
Software licenses and appliances
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	606	742	995	1,091
Professional services and other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	474	603	1,175	1,983
Total service
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,865	5,683	14,547	17,021
Subscription, maintenance and support
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,391	5,080	13,372	15,038
Subscription and support
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,786	2,636	8,205	7,360
Maintenance and support
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,605	$ 2,444	$ 5,167	$ 7,678

Qumu Corp 10-Q