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 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 based on these three reportable segments. The Company defines adjusted EBITDA as income from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gains on asset sales as presented below (in thousands):



	Three Months Ended March 31,
	2018			2017
Adjusted EBITDA:
Americas	$	291,549		$	198,619
EMEA	166,178			129,554
Asia-Pacific	121,788			99,401
Total adjusted EBITDA	579,515			427,574
Depreciation, amortization and accretion expense	(306,465		)	(219,013		)
Stock-based compensation expense	(42,536		)	(38,323		)
Acquisition costs	(4,639		)	(3,025		)
Income from operations	$	225,875		$	167,213

The Company also provides the following additional segment disclosures (in thousands):



	Three Months Ended March 31,
	2018		2017
Revenues:
Americas	$	602,627	$	436,447
EMEA	379,630		314,847
Asia-Pacific	233,620		198,231
Total	$	1,215,877	$	949,525
Depreciation and amortization:
Americas	$	157,578	$	87,927
EMEA	93,280		76,168
Asia-Pacific	56,710		52,911
Total	$	307,568	$	217,006
Capital expenditures:
Americas	$	147,329	$	153,435
EMEA	154,391		83,584
Asia-Pacific	48,009		40,223
Total	$	349,729	$	277,242

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



	March 31, 2018		December 31, 2017
Americas	$	4,470,166	$	4,425,077
EMEA	3,448,277		3,265,088
Asia-Pacific	1,778,249		1,704,437
Total long-lived assets	$	9,696,692	$	9,394,602

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



	Three Months Ended March 31, 2018
	Americas		EMEA		Asia-Pacific		Total
Colocation ⁽¹⁾	$	427,125	$	288,061	$	166,198	$	881,384
Interconnection	129,253		34,977		30,769		194,999
Managed infrastructure	18,535		30,686		22,180		71,401
Other ⁽¹⁾	1,079		1,766		—		2,845
Recurring revenues	575,992		355,490		219,147		1,150,629
Non-recurring revenues	26,635		24,140		14,473		65,248
Total	$	602,627	$	379,630	$	233,620	$	1,215,877

⁽¹⁾Includes some leasing and hedging activities that are insignificant to the Company's total operations.



	Three Months Ended March 31, 2017
	Americas		EMEA		Asia-Pacific		Total
Colocation ⁽¹⁾	$	299,273	$	253,254	$	138,995	$	691,522
Interconnection	100,850		22,351		24,859		148,060
Managed infrastructure	15,061		17,672		21,876		54,609
Other ⁽¹⁾	919		3,330		—		4,249
Recurring revenues	416,103		296,607		185,730		898,440
Non-recurring revenues	20,344		18,240		12,501		51,085
Total	$	436,447	$	314,847	$	198,231	$	949,525

⁽¹⁾Includes some leasing and hedging activities that are insignificant to the Company's total operations.

No single customer accounted for 10% or greater of the Company's accounts receivable or revenues for the three months ended March 31, 2018 and 2017.