15. Reportable Segments and Geographic Areas Information Descriptive Information about Reportable Segments The Company has two reportable segments, EIG and EMG. The Companys operating segments are identified based on the existence of segment managers. Certain of the Companys operating segments have been aggregated for segment reporting purposes primarily on the basis of product type, production processes, distribution methods and similarity of economic characteristics. EIG manufactures advanced instruments for the process, power and industrial, and aerospace markets. It provides process and analytical instruments for the oil and gas, petrochemical, pharmaceutical, semiconductor, automation, and food and beverage industries. EIG also provides instruments to the laboratory equipment, ultraprecision manufacturing, medical, and test and measurement markets. It makes power quality monitoring and metering devices, uninterruptible power supplies, programmable power equipment, electromagnetic compatibility test equipment and gas turbines sensors. EIG also provides dashboard instruments for heavy trucks and other vehicles, as well as instrumentation and controls for the food and beverage industries. It supplies the aerospace industry with aircraft and engine sensors, monitoring systems, power supplies, fuel and fluid measurement systems, and data acquisition systems. EMG is a differentiated supplier of automation solutions, thermal management systems, specialty metals and electrical interconnects. It manufactures highly engineered electrical connectors and electronic packaging used to protect sensitive electronic devices. EMG also makes precision motion control products for data storage, medical devices, business equipment, automation and other applications. It supplies high-purity powdered metals, strip and foil, specialty clad metals and metal matrix composites. EMG also manufactures motors used in commercial appliances, fitness equipment, food and beverage machines, hydraulic pumps and industrial blowers. It produces motor-blower systems and heat exchangers used in thermal management and other applications on a variety of military and commercial aircraft and military ground vehicles. EMG also operates a global network of aviation maintenance, repair and overhaul facilities. Measurement of Segment Results Segment operating income represents net sales less all direct costs and expenses (including certain administrative and other expenses) applicable to each segment, but does not include interest expense. Net sales by segment are reported after elimination of intra- and intersegment sales and profits, which are insignificant in amount. Reported segment assets include allocations directly related to the segments operations. Corporate assets consist primarily of investments, prepaid pensions, insurance deposits and deferred taxes. Reportable Segment Financial Information For sales by segment, see Note 3. 2018 2017 2016 (In thousands) Operating income and income before income taxes: Segment operating income (1)(2) : Electronic Instruments $ 782,144 $ 671,646 $ 571,077 Electromechanical 363,765 306,779 274,234 Total segment operating income 1,145,909 978,425 845,311 Corporate administrative expenses (70,369 ) (74,805 ) (54,332 ) Consolidated operating income 1,075,540 903,620 790,979 Interest and other expenses, net (87,795 ) (106,891 ) (97,876 ) Consolidated income before income taxes $ 987,745 $ 796,729 $ 693,103 Assets: Electronic Instruments $ 5,625,303 $ 4,803,575 Electromechanical 2,685,674 2,535,503 Total segment assets 8,310,977 7,339,078 Corporate 351,311 456,986 Consolidated assets $ 8,662,288 $ 7,796,064 Additions to property, plant and equipment (3) : Electronic Instruments $ 110,858 $ 54,321 $ 45,091 Electromechanical 42,461 36,829 39,340 Total segment additions to property, plant and equipment 153,319 91,150 84,431 Corporate 3,496 3,002 1,914 Consolidated additions to property, plant and equipment $ 156,815 $ 94,152 $ 86,345 Depreciation and amortization: Electronic Instruments $ 121,709 $ 108,053 $ 104,284 Electromechanical 75,801 73,222 73,767 Total segment depreciation and amortization 197,510 181,275 178,051 Corporate 1,980 1,952 1,665 Consolidated depreciation and amortization $ 199,490 $ 183,227 $ 179,716 (1) Segment operating income represents net sales less all direct costs and expenses (including certain administrative and other expenses) applicable to each segment, but does not include interest expense. (2) Effective January 1, 2018, the Company retrospectively adopted ASU 2017-07. See Note 2. (3) Includes $74.6 million in 2018, $19.1 million in 2017 and $23.1 million in 2016 from acquired businesses. Geographic Areas Information about the Companys operations in different geographic areas for the years ended December 31, 2018 and 2017 is shown below. For sales by geography, see Note 3. 2018 2017 (In thousands) Long-lived assets from continuing operations (excluding intangible assets): United States $ 380,855 $ 325,908 International (1) : United Kingdom 55,527 62,643 European Union countries 78,524 65,204 Asia 11,846 12,073 Other foreign countries 27,378 27,468 Total international 173,275 167,388 Total consolidated $ 554,130 $ 493,296 (1) Represents long-lived assets of foreign-based operations only.