Condensed Consolidating Financial Statements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidating statement of operations
Net revenue	$ 63,752	$ 58,486	$ 54,491	$ 46,524	$ 49,972	$ 50,115	$ 50,265	$ 44,044	$ 223,253	$ 194,396	$ 200,476
Expenses:
Direct operating expenses									92,256	88,590	84,802
Selling, general and administrative expenses									37,818	36,511	38,046
Corporate expenses									17,976	15,669	18,416
Depreciation and amortization									16,426	18,653	19,229
Impairment charge											36,109
Total expenses									164,476	159,423	196,602
Operating income (loss)									58,777	34,973	3,874
Interest expense (including related parties of $0, $30, and $83)									(35,407)	(37,650)	(24,429)
Interest income									86	3	260
Other income (loss)										687
Gain (loss) on debt extinguishment									(3,743)	(423)	(987)
Income (loss) before income taxes									19,713	(2,410)	(21,282)
Income tax (expense) benefit									(6,112)	(5,790)	3,376
Income (loss) before equity in net income (loss) of subsidiaries and nonconsolidated affiliate									13,601	(8,200)	(17,906)
Income (loss) before equity in net income (loss) of nonconsolidated affiliate									13,601	(8,200)	(17,906)
Equity in net income (loss) of nonconsolidated affiliate											(180)
Net income (loss) applicable to common stockholders	7,697	7,233	2,066	(3,395)	(2,032)	(1,384)	(352)	(4,432)	13,601	(8,200)	(18,086)
Parent [Member]
Consolidating statement of operations
Net revenue									222,050	193,081	199,314
Expenses:
Direct operating expenses									92,627	89,584	85,895
Selling, general and administrative expenses									37,320	36,305	37,489
Corporate expenses									17,976	15,669	18,416
Depreciation and amortization									15,743	17,839	18,417
Impairment charge											11,992
Total expenses									163,666	159,397	172,209
Operating income (loss)									58,384	33,684	27,105
Interest expense (including related parties of $0, $30, and $83)									(35,407)	(37,650)	(24,429)
Interest income									86	3	260
Other income (loss)										687
Gain (loss) on debt extinguishment									(3,743)	(423)	(987)
Income (loss) before income taxes									19,320	(3,699)	1,949
Income tax (expense) benefit									(1,833)	(1,510)	(2,617)
Income (loss) before equity in net income (loss) of subsidiaries and nonconsolidated affiliate									17,487	(5,209)	(668)
Equity in income (loss) of subsidiaries									(3,886)	(2,991)	(17,238)
Income (loss) before equity in net income (loss) of nonconsolidated affiliate										(8,200)	(17,906)
Equity in net income (loss) of nonconsolidated affiliate											(180)
Net income (loss) applicable to common stockholders									13,601	(8,200)	(18,086)
Guarantor Subsidiaries [Member]
Expenses:
Impairment charge											15,368
Total expenses											15,368
Operating income (loss)											(15,368)
Other income (loss)
Income (loss) before income taxes											(15,368)
Income tax (expense) benefit									(3,962)	(3,423)	3,225
Income (loss) before equity in net income (loss) of subsidiaries and nonconsolidated affiliate									(3,962)	(3,423)	(12,143)
Income (loss) before equity in net income (loss) of nonconsolidated affiliate										(3,423)	(12,143)
Net income (loss) applicable to common stockholders									(3,962)	(3,423)	(12,143)
Non-Guarantor Subsidiaries [Member]
Consolidating statement of operations
Net revenue									3,149	3,906	3,604
Expenses:
Direct operating expenses									1,575	1,597	1,349
Selling, general and administrative expenses									498	206	557
Depreciation and amortization									683	814	812
Impairment charge											8,749
Total expenses									2,756	2,617	11,467
Operating income (loss)									393	1,289	(7,863)
Other income (loss)
Income (loss) before income taxes									393	1,289	(7,863)
Income tax (expense) benefit									(317)	(857)	2,768
Income (loss) before equity in net income (loss) of subsidiaries and nonconsolidated affiliate									76	432	(5,095)
Income (loss) before equity in net income (loss) of nonconsolidated affiliate										432	(5,095)
Net income (loss) applicable to common stockholders									76	432	(5,095)
Eliminations [Member]
Consolidating statement of operations
Net revenue									(1,946)	(2,591)	(2,442)
Expenses:
Direct operating expenses									(1,946)	(2,591)	(2,442)
Total expenses									(1,946)	(2,591)	(2,442)
Other income (loss)
Equity in income (loss) of subsidiaries									3,886	2,991	17,238
Income (loss) before equity in net income (loss) of nonconsolidated affiliate										2,991	17,238
Net income (loss) applicable to common stockholders									$ 3,886	$ 2,991	$ 17,238