Goodwill - Additional Information (Details)	Sep. 30, 2019
Goodwill [Line Items]
Percentage Increase In Carrying Value Of Unit	20.00%
Weighted Average Cost Of Capital	15.00%
Long Term Growth Rate	3.00%
Radiation Monitoring Devices [Member]
Goodwill [Line Items]
Weighted Average Cost Of Capital	15.00%
Long Term Growth Rate	1.50%