Segment Information

While the Company has a single line of business, which is the design, build-out and operation of IBX data centers, it has determined that it has three reportable segments comprised of its Americas, EMEA and Asia-Pacific geographic regions.

The following tables present revenue information disaggregated by service lines and geographic areas (in thousands):



	Twelve Months Ended December 31, 2018
	Americas		EMEA		Asia-Pacific		Total
Colocation ⁽¹⁾	$	1,732,998	$	1,201,769	$	735,404	$	3,670,171
Interconnection	532,163		138,874		130,928		801,965
Managed infrastructure	75,595		118,685		85,352		279,632
Other ⁽¹⁾	16,570		8,164		—		24,734
Recurring revenues	2,357,326		1,467,492		951,684		4,776,502
Non-recurring revenues	127,408		95,145		72,599		295,152
Total	$	2,484,734	$	1,562,637	$	1,024,283	$	5,071,654


⁽¹⁾	Includes some leasing and hedging activities. For further information on revenue recognition, see Note 1 and Note 2 above.



	Twelve Months Ended December 31, 2017
	Americas		EMEA		Asia-Pacific		Total
Colocation ⁽¹⁾	$	1,518,929	$	1,063,543	$	595,673	$	3,178,145
Interconnection	469,268		104,891		107,014		681,173
Managed infrastructure	68,937		88,122		88,110		245,169
Other ⁽¹⁾	5,218		10,415		—		15,633
Recurring revenues	2,062,352		1,266,971		790,797		4,120,120
Non-recurring revenues	110,408		79,285		58,615		248,308
Total	$	2,172,760	$	1,346,256	$	849,412	$	4,368,428


⁽¹⁾	Includes some leasing and hedging activities. For further information on revenue recognition, see Note 1 and Note 2 above.



	Twelve Months Ended December 31, 2016
	Americas		EMEA		Asia-Pacific		Total
Colocation ⁽¹⁾	$	1,161,665	$	941,848	$	543,581	$	2,647,094
Interconnection	374,655		85,869		82,521		543,045
Managed infrastructure	53,404		67,553		89,335		210,292
Other ⁽¹⁾	3,360		11,382		2,201		16,943
Recurring revenues	1,593,084		1,106,652		717,638		3,417,374
Non-recurring revenues	86,465		64,687		43,463		194,615
Total	$	1,679,549	$	1,171,339	$	761,101	$	3,611,989


⁽¹⁾	Includes some leasing and hedging activities. For further information on revenue recognition, see Note 1 and Note 2 above.

The Company's chief operating decision-maker evaluates performance, makes operating decisions and allocates resources based on the Company's revenues and adjusted EBITDA performance both on a consolidated basis and these three reportable segments. The Company defines adjusted EBITDA as income from operations excluding depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales as presented below for the years ended December 31 (in thousands):



	2018			2017			2016
Adjusted EBITDA:
Americas	$	1,183,831		$	1,034,694		$	787,311
EMEA	698,280			582,697			494,263
Asia-Pacific	531,129			434,650			375,900
Total adjusted EBITDA	2,413,240			2,052,041			1,657,474
Depreciation, amortization and accretion expense	(1,226,741		)	(1,028,892		)	(843,510		)
Stock-based compensation expense	(180,716		)	(175,500		)	(156,148		)
Acquisitions costs	(34,413		)	(38,635		)	(64,195		)
Impairment charges	—			—			(7,698		)
Gain on asset sales	6,013			—			32,816
Income from operations	$	977,383		$	809,014		$	618,739

The Company provides the following segment disclosures related to its continuing operations as follows for the years ended December 31 (in thousands):



	2018		2017		2016
Depreciation and amortization:
Americas	$	636,214	$	515,726	$	319,202
EMEA	355,895		316,250		313,291
Asia-Pacific	235,380		210,504		204,714
Total	$	1,227,489	$	1,042,480	$	837,207

Capital expenditures:
Americas	$	773,514	$	621,158	$	503,855
EMEA	884,790		555,346		400,642
Asia-Pacific	437,870		202,221		208,868
Total	$	2,096,174	$	1,378,725	$	1,113,365

The Company's long-lived assets are located in the following geographic areas as of December 31 (in thousands):



	2018		2017
Americas ⁽¹⁾	$	5,010,507	$	4,425,077
EMEA	3,726,596		3,265,088
Asia-Pacific	2,288,917		1,704,437
Total long-lived assets	$	11,026,020	$	9,394,602


⁽¹⁾	Includes $4.6 billion and $4.0 billion, respectively, of long-lived assets attributed to the U.S. as of December 31, 2018 and 2017.