Fair Value Measurements (Unobservable Inputs) (Details)	3 Months Ended
Mar. 31, 2021
Unobservable input [Abstract]
Unobservable input, range high, low and weighted average	5 years

Unobservable input, range high, low and weighted average

No definition available.

Name:	qumu_Unobservableinputrangehighlowandweightedaverage
Namespace Prefix:	qumu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration