Restructuring - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 1,988	$ 0	$ 3,630	$ 4,797
Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	255		595
Fluid & Metering Technologies | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	343		486
Health & Science Technologies | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,123		2,182
Fire & Safety/Diversified Products | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	267		367
Severance Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,762		3,312
Severance Costs | Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	255		595
Severance Costs | Fluid & Metering Technologies | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	208		351
Severance Costs | Health & Science Technologies | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,032		1,999
Severance Costs | Fire & Safety/Diversified Products | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	267		367
Exit Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	226		318
Exit Costs | Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0		0
Exit Costs | Fluid & Metering Technologies | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	135		135
Exit Costs | Health & Science Technologies | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	91		183
Exit Costs | Fire & Safety/Diversified Products | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 0		$ 0