Restructuring Expenses and Asset Impairments - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 3,204	$ 2,917	$ 8,568	$ 6,758
Operating segments | Fluid & Metering Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,934	585	4,787	2,433
Operating segments | Health & Science Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	626	978	1,693	2,162
Operating segments | Fire & Safety/Diversified Products
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	(55)	1,249	161	1,890
Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	699	105	1,927	273
Severance Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	2,615	2,832	7,753	6,673
Severance Costs | Operating segments | Fluid & Metering Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,345	500	3,972	2,348
Severance Costs | Operating segments | Health & Science Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	626	978	1,693	2,162
Severance Costs | Operating segments | Fire & Safety/Diversified Products
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	(55)	1,249	161	1,890
Severance Costs | Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	699	105	1,927	273
Exit Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Exit Costs | Operating segments | Fluid & Metering Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Exit Costs | Operating segments | Health & Science Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Exit Costs | Operating segments | Fire & Safety/Diversified Products
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Exit Costs | Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Asset Impairment
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	589	85	815	85
Asset Impairment | Operating segments | Fluid & Metering Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	589	85	815	85
Asset Impairment | Operating segments | Health & Science Technologies
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Asset Impairment | Operating segments | Fire & Safety/Diversified Products
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0	0	0	0
Asset Impairment | Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 0	$ 0	$ 0	$ 0