CONDENSED CONSOLIDATING FINANCIAL STATEMENTS: (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	$ 282,618	$ 222,374
Program and production	80,433	59,797
Selling, general and administrative	63,188	45,079
Depreciation, amortization and other operating expenses	75,341	57,604
Total operating expenses	218,962	162,480
Operating income	63,656	59,894
Interest expense	(37,697)	(27,387)
Other income (expense)	(595)	1,412
Total other expense, net	(38,292)	(25,975)
Income tax benefit (provision)	(8,849)	(4,794)
Income (Loss) from discontinued operations	355	(51)
NET INCOME	16,870	29,074
Net loss attributable to the noncontrolling interests	127	285
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	16,997	29,359
Comprehensive income (loss)	16,831	29,178
Sinclair Broadcast Group, Inc.
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Selling, general and administrative	824	853
Depreciation, amortization and other operating expenses	342	383
Total operating expenses	1,166	1,236
Operating income	(1,166)	(1,236)
Equity in earnings of consolidated subsidiaries	17,849	30,191
Interest expense	(311)	(340)
Other income (expense)	956	600
Total other expense, net	18,494	30,451
Income tax benefit (provision)	(331)	144
NET INCOME	16,997	29,359
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	16,997	29,359
Comprehensive income (loss)	16,831	29,178
Sinclair Television Group, Inc.
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Program and production	32	8
Selling, general and administrative	9,917	13,631
Depreciation, amortization and other operating expenses	299	351
Total operating expenses	10,248	13,990
Operating income	(10,248)	(13,990)
Equity in earnings of consolidated subsidiaries	46,717	51,860
Interest expense	(35,233)	(24,764)
Other income (expense)	7,438	(283)
Total other expense, net	18,922	26,813
Income tax benefit (provision)	7,986	8,125
Income (Loss) from discontinued operations	(58)	(67)
NET INCOME	16,602	20,881
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	16,602	20,881
Comprehensive income (loss)	16,563	20,985
Guarantor Subsidiaries and KDSM, LLC
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	270,547	208,746
Program and production	82,700	61,485
Selling, general and administrative	51,203	29,501
Depreciation, amortization and other operating expenses	62,103	42,497
Total operating expenses	196,006	133,483
Operating income	74,541	75,263
Equity in earnings of consolidated subsidiaries	(30)
Interest expense	(1,115)	(1,219)
Other income (expense)	(7,288)	23
Total other expense, net	(8,433)	(1,196)
Income tax benefit (provision)	(18,734)	(21,235)
Income (Loss) from discontinued operations	413	16
NET INCOME	47,787	52,848
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	47,787	52,848
Comprehensive income (loss)	47,787	52,848
Non-Guarantor Subsidiaries
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	23,917	15,674
Program and production	5,588	76
Selling, general and administrative	5,689	1,195
Depreciation, amortization and other operating expenses	14,981	14,511
Total operating expenses	26,258	15,782
Operating income	(2,341)	(108)
Interest expense	(6,187)	(6,244)
Other income (expense)	(1,257)	1,201
Total other expense, net	(7,444)	(5,043)
Income tax benefit (provision)	2,230	8,172
NET INCOME	(7,555)	3,021
Net loss attributable to the noncontrolling interests	127	285
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	(7,428)	3,306
Comprehensive income (loss)	(7,428)	3,306
Non-Guarantor Subsidiaries | Revisions
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Depreciation, amortization and other operating expenses		200
Net loss attributable to the noncontrolling interests		300
Eliminations
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	(11,846)	(2,046)
Program and production	(7,887)	(1,772)
Selling, general and administrative	(4,445)	(101)
Depreciation, amortization and other operating expenses	(2,384)	(138)
Total operating expenses	(14,716)	(2,011)
Operating income	2,870	(35)
Equity in earnings of consolidated subsidiaries	(64,536)	(82,051)
Interest expense	5,149	5,180
Other income (expense)	(444)	(129)
Total other expense, net	(59,831)	(77,000)
NET INCOME	(56,961)	(77,035)
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	(56,961)	(77,035)
Comprehensive income (loss)	(56,922)	(77,139)
Eliminations | Revisions
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Depreciation, amortization and other operating expenses		(200)
Net loss attributable to the noncontrolling interests		$ (300)