Business segments and other information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Business segments and other information

The following tables present the Company’s segment results for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Vascular North America	$	329,473	$	313,618	$	295,206
Interventional North America	261,645		220,611		82,431
Anesthesia North America	205,064		197,982		198,772
Surgical North America	166,267		175,216		172,223
EMEA	603,813		552,722		510,934
Asia	286,895		269,208		249,416
OEM	205,976		182,967		160,990
All other	389,250		233,979		198,055
Net revenues	$	2,448,383	$	2,146,303	$	1,868,027

	Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Vascular North America	$	98,505		$	77,036		$	77,122
Interventional North America	62,242			25,972			13,264
Anesthesia North America	61,159			62,901			55,544
Surgical North America	62,934			63,931			56,608
EMEA	106,090			92,430			84,392
Asia	78,135			75,637			75,770
OEM	50,294			41,578			33,641
All other	(29,042		)	11,142			26,486
Total segment operating profit (1)	490,317			450,627			422,827
Unallocated expenses (2)	(168,613		)	(78,348		)	(103,374		)
Income from continuing operations before interest, loss on extinguishment of debt and taxes	$	321,704		$	372,279		$	319,453

(1) Segment operating profit includes segment net revenues from external customers reduced by its standard cost of goods sold, adjusted for fixed manufacturing cost absorption variances, selling, general and administrative expenses, research and development expenses and an allocation of corporate expenses. Corporate expenses are allocated among the segments in proportion to the respective amounts of one of several items (such as sales, numbers of employees, and amount of time spent), depending on the category of expense involved.

(2) Unallocated expenses primarily include manufacturing variances, with the exception of fixed manufacturing cost absorption variances, restructuring and impairment charges and gain on sale of assets.

	Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Vascular North America	$	27,535	$	31,058	$	35,117
Interventional North America	34,127		29,108		6,993
Anesthesia North America	10,162		8,573		10,932
Surgical North America	8,321		8,694		10,459
EMEA	47,171		34,322		30,505
Asia	12,917		11,868		11,275
OEM	8,610		8,337		8,404
All other	65,871		28,378		14,661
Consolidated depreciation and amortization	$	214,714	$	160,338	$	128,346

Total Net Revenues and Total Net Property, Plant and Equipment by Geographic Region

The following tables provide total net revenues and total net property, plant and equipment by geographic region for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Net revenues (based on the Company's selling location):
United States	$	1,449,426	$	1,254,825	$	1,018,786
Europe	671,264		591,370		567,320
Asia and Asia Pacific	234,090		220,110		208,841
All other	93,603		79,998		73,080
	$	2,448,383	$	2,146,303	$	1,868,027
Net property, plant and equipment:
United States	$	258,415	$	216,568	$	167,167
Malaysia	51,952		43,730		31,415
Ireland	41,223		43,867		36,569
Czech Republic	34,833		35,715		30,843
All other	46,343		43,119		36,905
	$	432,766	$	382,999	$	302,899