Restructuring charges - Charges Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,063	$ 12,945
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,656	12,750
Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	407	195
Vascular Solutions Integration Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,482
Vascular Solutions Integration Program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,482
Vascular Solutions Integration Program | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0
EMEA Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring charges		7,121
EMEA Restructuring Program | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		7,121
EMEA Restructuring Program | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0
2016 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,149	509
2016 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,955	539
2016 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	194	(30)
2014 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	124	311
2014 Footprint realignment plan | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	116	303
2014 Footprint realignment plan | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8	8
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	790	522
Other restructuring programs | Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	585	305
Other restructuring programs | Other Restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 205	$ 217