Condensed Consolidating Financial Statements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidating Statement of Operations
Net revenue	$ 58,486	$ 50,115	$ 159,501	$ 144,424
Expenses:
Direct operating expenses	23,293	22,582	67,803	65,890
Selling, general and administrative expenses	9,593	8,621	28,600	27,150
Corporate expenses	4,465	3,885	12,527	11,402
Depreciation and amortization	4,013	5,015	12,436	14,172
Total expenses	41,364	40,103	121,366	118,614
Operating income (loss)	17,122	10,012	38,135	25,810
Interest expense (including related parties of $0, $0, $0, and $30) (note 2)	(8,671)	(9,444)	(26,730)	(28,346)
Interest income	10		23	2
Other income (loss)				687
Gain (loss) on debt extinguishment			(1,230)
Income (loss) before income taxes	8,461	568	10,198	(1,847)
Income tax (expense) benefit	(1,228)	(1,952)	(4,294)	(4,321)
Income (loss) before equity in net income (loss) of subsidiaries	7,233	(1,384)	5,904	(6,168)
Equity in net income (loss) of subsidiaries
Net income (loss) applicable to common stockholders	7,233	(1,384)	5,904	(6,168)
Parent [Member]
Consolidating Statement of Operations
Net revenue	58,281	49,757	158,590	143,453
Expenses:
Direct operating expenses	23,316	22,812	67,695	66,677
Selling, general and administrative expenses	9,470	8,807	28,231	27,072
Corporate expenses	4,465	3,885	12,527	11,402
Depreciation and amortization	3,853	4,805	11,912	13,553
Total expenses	41,104	40,309	120,365	118,704
Operating income (loss)	17,177	9,448	38,225	24,749
Interest expense (including related parties of $0, $0, $0, and $30) (note 2)	(8,671)	9,444	(26,730)	28,346
Interest income	10		23	2
Other income (loss)				687
Gain (loss) on debt extinguishment			(1,230)
Income (loss) before income taxes	8,516	4	10,288	(2,908)
Income tax (expense) benefit	(250)	(787)	(1,316)	(1,181)
Income (loss) before equity in net income (loss) of subsidiaries	8,266	(783)	8,972	(4,089)
Equity in net income (loss) of subsidiaries	(1,033)	(601)	(3,068)	(2,079)
Net income (loss) applicable to common stockholders	7,233	(1,384)	5,904	(6,168)
Guarantor Subsidiaries [Member]
Consolidating Statement of Operations
Net revenue
Expenses:
Direct operating expenses
Selling, general and administrative expenses
Corporate expenses
Depreciation and amortization
Total expenses
Operating income (loss)
Interest expense (including related parties of $0, $0, $0, and $30) (note 2)
Interest income
Other income (loss)
Gain (loss) on debt extinguishment
Income (loss) before income taxes
Income tax (expense) benefit	(1,009)	(848)	(3,029)	(2,543)
Income (loss) before equity in net income (loss) of subsidiaries	(1,009)	(848)	(3,029)	(2,543)
Equity in net income (loss) of subsidiaries
Net income (loss) applicable to common stockholders	(1,009)	(848)	(3,029)	(2,543)
Non-Guarantor Subsidiaries [Member]
Consolidating Statement of Operations
Net revenue	603	1,024	1,945	2,973
Expenses:
Direct operating expenses	375	436	1,142	1,215
Selling, general and administrative expenses	123	(186)	369	78
Corporate expenses
Depreciation and amortization	160	210	524	619
Total expenses	658	460	2,035	1,912
Operating income (loss)	(55)	564	(90)	1,061
Interest expense (including related parties of $0, $0, $0, and $30) (note 2)
Interest income
Other income (loss)
Gain (loss) on debt extinguishment
Income (loss) before income taxes	(55)	564	(90)	1,061
Income tax (expense) benefit	31	(317)	51	(597)
Income (loss) before equity in net income (loss) of subsidiaries	(24)	247	(39)	464
Equity in net income (loss) of subsidiaries
Net income (loss) applicable to common stockholders	(24)	247	(39)	464
Eliminations [Member]
Consolidating Statement of Operations
Net revenue	(398)	(666)	(1,034)	(2,002)
Expenses:
Direct operating expenses	(398)	(666)	(1,034)	(2,002)
Selling, general and administrative expenses
Corporate expenses
Depreciation and amortization
Total expenses	(398)	(666)	(1,034)	(2,002)
Operating income (loss)
Interest expense (including related parties of $0, $0, $0, and $30) (note 2)
Interest income
Other income (loss)
Gain (loss) on debt extinguishment
Income (loss) before income taxes
Income tax (expense) benefit
Income (loss) before equity in net income (loss) of subsidiaries
Equity in net income (loss) of subsidiaries	1,033	601	3,068	2,079
Net income (loss) applicable to common stockholders	$ 1,033	$ 601	$ 3,068	$ 2,079