REPORTABLE SEGMENTS

The Company's segments are based on the method of internal reporting which classifies operations by property type and geographical area. The segments by property type are: Office, Mixed-Use, and Other. The segments by geographical region are: Atlanta, Charlotte, Austin, Phoenix, Tampa, Orlando, Houston, and Other. These reportable segments represent an aggregation of operating segments reported to the Chief Operating Decision Maker based on similar economic characteristics that include the type of product and the geographical location. Each segment includes both consolidated operations and the Company's share of joint venture operations.

Company management evaluates the performance of its reportable segments in part based on net operating income (“NOI”). NOI represents rental property revenues less rental property operating expenses. NOI is not a measure of cash flows or operating results as measured by GAAP, is not indicative of cash available to fund cash needs and should not be considered an alternative to cash flows as a measure of liquidity. All companies may not calculate NOI in the same manner. The Company considers NOI to be an appropriate supplemental measure to net income as it helps both management and investors understand the core operations of the Company's operating assets. NOI excludes corporate general and administrative expenses, interest expense, depreciation and amortization, impairments, gains/loss on sales of real estate, and other non-operating items.

Segment net income, amount of capital expenditures, and total assets are not presented in the following tables because management does not utilize these measures when analyzing its segments or when making resource allocation decisions. Information on the Company's segments along with a reconciliation of NOI to net income available to common stockholders is as follows (in thousands):



Year ended December 31, 2017	Office		Mixed-Use		Other		Total
Net Operating Income:
Atlanta	$	109,706	$	3,278	$	—	$	112,984
Charlotte	62,708		—		—		62,708
Austin	58,648		—		—		58,648
Phoenix	34,074		—		—		34,074
Tampa	29,426		—		—		29,426
Orlando	13,029		—		—		13,029
Other	1,632		705		—		2,337
Total Net Operating Income	$	309,223	$	3,983	$	—	$	313,206



Year ended December 31, 2016	Office		Mixed-Use		Other		Total
Net Operating Income:
Atlanta	$	98,032	$	7,411	$	—	$	105,443
Houston	78,590		—		—		78,590
Austin	29,865		—		—		29,865
Charlotte	28,418		—		—		28,418
Tampa	7,130		—		—		7,130
Phoenix	6,067		—		—		6,067
Orlando	3,265		—		—		3,265
Other	1,504		—		—		1,504
Total Net Operating Income	$	252,871	$	7,411	$	—	$	260,282



Year ended December 31, 2015	Office		Mixed-Use		Other		Total
Net Operating Income:
Houston	$	103,210	$	—	$	—	$	103,210
Atlanta	93,438		5,854		—		99,292
Charlotte	16,164		—		—		16,164
Austin	15,294		—		—		15,294
Other	7,104		—		168		7,272
Total Net Operating Income	$	235,210	$	5,854	$	168	$	241,232

The following reconciles Net Income to Net Operating Income for each of the periods presented (in thousands):



	Year Ended December 31,
	2017			2016			2015
Net income	$	219,959		$	80,104		$	125,629
Net operating income from unconsolidated joint ventures	31,053			28,785			24,335
Net operating income from discontinued operations	—			78,591			103,198
Fee income	(8,632		)	(8,347		)	(7,297		)
Other income	(11,518		)	(1,050		)	(828		)
Reimbursed expenses	3,527			3,259			3,430
General and administrative expenses	27,523			25,592			16,918
Interest expense	33,524			26,650			22,735
Depreciation and amortization	196,745			97,948			71,625
Acquisition and transaction costs	1,661			24,521			299
Other expenses	1,796			5,888			1,181
(Gain) loss on extinguishment of debt	(2,258		)	5,180			—
Income from unconsolidated joint ventures	(47,115		)	(10,562		)	(8,302		)
Gain on sale of investment properties	(133,059		)	(77,114		)	(80,394		)
Income from discontinued operations	—			(19,163		)	(31,297		)
Net Operating Income	$	313,206		$	260,282		$	241,232

Revenues by reportable segment, including a reconciliation to total revenues on the consolidated statements of operations for years ended December 31, 2017, 2016, and 2015 are as follows (in thousands):



Year ended December 31, 2017	Office		Mixed-Use		Other		Total
Revenues:
Atlanta	$	176,190	$	5,237	$	—	$	181,427
Austin	100,939		—		—		100,939
Charlotte	91,434		—		—		91,434
Orlando	24,862		—		—		24,862
Tampa	47,402		—		—		47,402
Phoenix	46,186		—		—		46,186
Other	3,021		999		—		4,020
Total segment revenues	490,034		6,236		—		496,270
Company's share of rental property revenues from unconsolidated joint ventures	43,999		6,236		—		50,235
Total rental property revenues	$	446,035	$	—	$	—	$	446,035



Year ended December 31, 2016	Office		Mixed-Use		Other		Total
Revenues:
Atlanta	$	160,540	$	13,043	$	—	$	173,583
Houston	136,926		—		—		136,926
Austin	52,769		—		—		52,769
Charlotte	39,448		—		—		39,448
Tampa	10,994		—		—		10,994
Phoenix	8,902		—		—		8,902
Orlando	5,896		—		—		5,896
Other	2,443		—		—		2,443
Total segment revenues	417,918		13,043		—		430,961
Company's share of rental property revenues from unconsolidated joint ventures	31,177		13,043		—		44,220
Revenues included in discontinued operations	136,927		—		—		136,927
Total rental property revenues	$	249,814	$	—	$	—	$	249,814



Year ended December 31, 2015	Office		Mixed-Use		Other		Total
Revenues:
Houston	$	176,823	$	—	$	—	$	176,823
Atlanta	164,712		9,975		—		174,687
Austin	26,581		—		—		26,581
Charlotte	22,964		—		—		22,964
Other	9,216		—		192		9,408
Total segment revenues	400,296		9,975		192		410,463
Company's share of rental property revenues from unconsolidated joint ventures	27,416		9,975		—		37,391
Revenues included in discontinued operations	176,828		—		—		176,828
Total rental property revenues	$	196,052	$	—	$	192	$	196,244