Condensed Consolidating Financial Statements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidating Statement of Operations
Net revenue	$ 54,491	$ 50,265	$ 101,015	$ 94,309
Expenses:
Direct operating expenses	22,876	22,487	44,510	43,308
Selling, general and administrative expenses	9,635	9,286	19,007	18,529
Corporate expenses	4,181	3,772	8,062	7,517
Depreciation and amortization	4,076	4,425	8,423	9,157
Total expenses	40,768	39,970	80,002	78,511
Operating income (loss)	13,723	10,295	21,013	15,798
Interest expense (including related parties of $0, $15, $0 and $30) (note 2)	(8,959)	(9,459)	(18,059)	(18,902)
Interest income	9		13	2
Other income (loss)				687
Gain (loss) on debt extinguishment	(1,230)		(1,230)
Income (loss) before income taxes	3,543	836	1,737	(2,415)
Income tax (expense) benefit	(1,477)	(1,188)	(3,066)	(2,369)
Income (loss) before equity in net income (loss) of subsidiaries	2,066	(352)	(1,329)	(4,784)
Equity in income (loss) of subsidiaries
Net income (loss) applicable to common stockholders	2,066	(352)	(1,329)	(4,784)
Parent [Member]
Consolidating Statement of Operations
Net revenue	54,360	49,863	100,309	93,696
Expenses:
Direct operating expenses	22,859	22,766	44,379	43,865
Selling, general and administrative expenses	9,516	9,150	18,761	18,265
Corporate expenses	4,181	3,772	8,062	7,517
Depreciation and amortization	3,898	4,221	8,059	8,748
Total expenses	40,454	39,909	79,261	78,395
Operating income (loss)	13,906	9,954	21,048	15,301
Interest expense (including related parties of $0, $15, $0 and $30) (note 2)	(8,959)	(9,459)	(18,059)	(18,902)
Interest income	9		13	2
Other income (loss)				687
Gain (loss) on debt extinguishment	(1,230)		(1,230)
Income (loss) before income taxes	3,726	495	1,772	(2,912)
Income tax (expense) benefit	(570)	(145)	(1,066)	(394)
Income (loss) before equity in net income (loss) of subsidiaries	3,156	350	706	(3,306)
Equity in income (loss) of subsidiaries	(1,090)	(702)	(2,035)	(1,478)
Net income (loss) applicable to common stockholders	2,066	(352)	(1,329)	(4,784)
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, $15, $0 and $30) (note 2)
Interest income
Gain (loss) on debt extinguishment
Income (loss) before income taxes
Income tax (expense) benefit	(1,010)	(851)	(2,020)	(1,695)
Income (loss) before equity in net income (loss) of subsidiaries	(1,010)	(851)	(2,020)	(1,695)
Equity in income (loss) of subsidiaries
Net income (loss) applicable to common stockholders	(1,010)	(851)	(2,020)	(1,695)
Non-Guarantor Subsidiaries [Member]
Consolidating Statement of Operations
Net revenue	496	1,106	1,342	1,949
Expenses:
Direct operating expenses	382	425	767	779
Selling, general and administrative expenses	119	136	246	264
Corporate expenses
Depreciation and amortization	178	204	364	409
Total expenses	679	765	1,377	1,452
Operating income (loss)	(183)	341	(35)	497
Interest expense (including related parties of $0, $15, $0 and $30) (note 2)
Interest income
Gain (loss) on debt extinguishment
Income (loss) before income taxes	(183)	341	(35)	497
Income tax (expense) benefit	103	(192)	20	(280)
Income (loss) before equity in net income (loss) of subsidiaries	(80)	149	(15)	217
Equity in income (loss) of subsidiaries
Net income (loss) applicable to common stockholders	(80)	149	(15)	217
Eliminations [Member]
Consolidating Statement of Operations
Net revenue	(365)	(704)	(636)	(1,336)
Expenses:
Direct operating expenses	(365)	(704)	(636)	(1,336)
Selling, general and administrative expenses
Corporate expenses
Depreciation and amortization
Total expenses	(365)	(704)	(636)	(1,336)
Operating income (loss)
Interest expense (including related parties of $0, $15, $0 and $30) (note 2)
Interest income
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 income (loss) of subsidiaries	1,090	702	2,035	1,478
Net income (loss) applicable to common stockholders	$ 1,090	$ 702	$ 2,035	$ 1,478