The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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Restructuring (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Nov. 30, 2019	Feb. 28, 2017	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			$ 5,906	$ 6,331	$ 2,251
2020 Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			3,947
Short-term restructuring reserves			3,500
2019 Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			108	2,494
2017 Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			365	739	$ 2,251
Percentage of reduction of global workforce (more than)		20.00%
DataRPM and Kinvey
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets	$ 22,700
Ipswitch \| 2019 Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Restructuring expenses			1,486	$ 3,098
Short-term restructuring reserves			$ 400
Trademarks and Trade Names \| DataRPM and Kinvey
Restructuring Cost and Reserve [Line Items]
Impairment of intangible assets	$ 22,700