7. SEGMENT DATA

We measure segment performance based on operating income (loss). Excluding discontinued operations, our broadcast segment includes stations in 58 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 nine months ended September 30, 2013 and 2012. Our other operating divisions primarily consist of sign design and fabrication; regional security alarm operating and bulk acquisitions 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. Our Other Operating Divisions and Corporate are not reportable segments but are included for reconciliation purposes. We had approximately $171.7 million and $171.2 million of intercompany loans between the broadcast segment, operating divisions and corporate as of September 30, 2013 and 2012, respectively. We had $5.0 million in intercompany interest expense related to intercompany loans between the broadcast segment, other operating divisions and corporate for the both three months ended September 30, 2013, and 2012, respectively. For the nine months ended September 30, 2013 and 2012, we had $15.0 million and $14.9 million, respectively, in intercompany interest expense. Intercompany loans and interest expense are excluded from the tables below. All other intercompany transactions are immaterial.

Financial information for our operating segments are included in the following tables for the periods presented (in thousands):

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
Assets	3,303,838		306,204			7,631			3,617,673

For the three months ended September 30, 2012	Broadcast		Other Operating Divisions		Corporate			Consolidated
Revenue	$	246,202	$	12,512	$	—		$	258,714
Depreciation of property and equipment	11,864		380		382			12,626
Amortization of definite-lived intangible assets and other assets	9,556		1,006		—			10,562
Amortization of program contract costs and net realizable value adjustments	14,296		—		—			14,296
General and administrative overhead expenses	7,325		215		746			8,286
Operating income (loss)	78,988		538		(1,128		)	78,398
Interest expense	—		962		34,332			35,294
Income from equity and cost method investments	—		1,919		—			1,919

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

For the nine months ended September 30, 2012	Broadcast		Other Operating Divisions			Corporate			Consolidated
Revenue	$	693,553	$	38,609		$	—		$	732,162
Depreciation of property and equipment	31,768		1,115			1,148			34,031
Amortization of definite-lived intangible assets and other assets	23,021		3,354			—			26,375
Amortization of program contract costs and net realizable value adjustments	43,565		—			—			43,565
General and administrative overhead expenses	21,932		1,130			2,104			25,166
Operating income (loss)	213,618		(172		)	(3,265		)	210,181
Interest expense	—		2,517			89,484			92,001
Income from equity and cost method investments	—		8,343			—			8,343