Natus Medical Incorporated Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment [Line Items]
Proceeds from sale of property and equipment		$ 2,674	$ 0
Gain (Loss) on Disposition of Property Plant Equipment		$ 1,516	$ (149)
Land \| Canada
Property, Plant and Equipment [Line Items]
Proceeds from sale of property and equipment	$ 1,600
Gain (Loss) on Disposition of Property Plant Equipment	700
Building \| United Kingdom
Property, Plant and Equipment [Line Items]
Proceeds from sale of property and equipment	1,100
Gain (Loss) on Disposition of Property Plant Equipment	$ 800