7. SEGMENT DATA

We measure segment performance based on operating income (loss). Excluding discontinued operations, our broadcast segment includes stations in 76 markets located throughout the continental United States. The operating results of WLAJ-TV and WLWC-TV, which were sold effective March 1, 2013 and April 1, 2013, respectively, are classified as discontinued operations and are not included in our consolidated results of continuing operations for the three months ended September 30, 2013. Our other operating divisions primarily consist of sign design and fabrication; regional security alarm operating and bulk acquisitions; manufacturing and service of broadcast antennas and transmitters; and real estate ventures. All of our other operating divisions are located within the United States. Corporate costs primarily include our costs to operate as a public company and to operate our corporate headquarters location. Other Operating Divisions and Corporate are not reportable segments but are included for reconciliation purposes. We had approximately $172.3 million and $171.7 million of intercompany loans between the broadcast segment, other operating divisions and corporate as of September 30, 2014 and 2013, respectively. We had $5.3 million and $5.0 million in intercompany interest expense related to intercompany loans between the broadcast segment, other operating divisions and corporate for the three months ending September 30, 2014 and 2013, respectively. For the nine months ended September 30, 2014 and 2013, we had $15.3 million and $15.0 million, respectively, in intercompany interest expense. All other intercompany transactions are immaterial.

Segment financial information is included in the following tables for the periods presented (in thousands):

For the three months ended September 30, 2014	Broadcast		Other Operating Divisions		Corporate			Consolidated
Revenue	$	476,538	$	18,418	$	—		$	494,956
Depreciation of property and equipment	24,516		559		267			25,342
Amortization of definite-lived intangible assets and other assets	32,724		1,754		—			34,478
Amortization of program contract costs and net realizable value adjustments	28,622		—		—			28,622
General and administrative overhead expenses	13,180		68		3,743			16,991
Operating income (loss)	104,776		897		(4,010		)	101,663
Interest expense	—		1,036		46,914			47,950
Income from equity and cost method investments	—		1,928		—			1,928
Assets	4,690,074		335,909		268,273			5,294,256

For the three months ended September 30, 2013	Broadcast		Other Operating Divisions			Corporate			Consolidated
Revenue	$	323,681	$	14,963		$	—		$	338,644
Depreciation of property and equipment	16,579		481			348			17,408
Amortization of definite-lived intangible assets and other assets	15,851		1,317			—			17,168
Amortization of program contract costs and net realizable value adjustments	19,229		—			—			19,229
General and administrative overhead expenses	14,633		576			900			16,109
Operating income (loss)	74,210		(113		)	(1,249		)	72,848
Interest expense	—		846			39,021			39,867
Income from equity and cost method investments	—		1,571			—			1,571

For the nine months ended September 30, 2014	Broadcast		Other Operating Divisions		Corporate			Consolidated
Revenue	$	1,311,931	$	50,809	$	—		$	1,362,740
Depreciation of property and equipment	72,455		1,716		801			74,972
Amortization of definite-lived intangible assets and other assets	79,238		4,957		—			84,195
Amortization of program contract costs and net realizable value adjustments	76,137		—		—			76,137
General and administrative overhead expenses	40,578		736		8,915			50,229
Operating income (loss)	293,942		1,476		(9,716		)	285,702
Interest expense	—		2,986		124,623			127,609
Income from equity and cost method investments	—		2,768		—			2,768
Assets	4,690,074		335,909		268,273			5,294,256

For the nine months ended September 30, 2013	Broadcast		Other Operating Divisions			Corporate			Consolidated
Revenue	$	896,153	$	39,263		$	—		$	935,416
Depreciation of property and equipment	44,739		1,330			1,039			47,108
Amortization of definite-lived intangible assets and other assets	45,089		3,638			—			48,727
Amortization of program contract costs and net realizable value adjustments	56,746		—			—			56,746
General and administrative overhead expenses	34,991		1,136			2,679			38,806
Operating income (loss)	224,652		(150		)	(3,718		)	220,784
Interest expense	—		2,385			120,644			123,029
Income from equity and cost method investments	—		115			—			115