Note 9 - Subsidiary Guarantees (Detail) - Condensed Consolidating Balance Sheets (USD $)	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
Current assets
Cash and cash equivalents	$ 27,184,689	$ 12,393,792	$ 17,761,824	$ 18,226,374
Accounts receivable, net	4,637,315	4,355,632
Materials and supplies	1,999,700	1,780,820
Prepaid expenses	1,505,162	1,328,475
Deferred income tax asset current	816,933	726,310
Total current assets	43,266,019	28,217,568
Property and equipment, net	57,925,140	65,881,975
Goodwill	44,956,840	188,954,840
Intangible assets, net	8,278,909	20,545,691		20,545,691
Investments	1,924,672	1,943,805
Deferred income tax asset noncurrent	7,575,073	7,454,443
Other long-term assets	505,358	240,667
Total assets	168,490,060	317,724,313
Current liabilities
Accounts payable and accrued expenses	1,228,228	1,490,717
Total current liabilities	14,633,263	9,612,452
Deferred income tax liabilities noncurrent	23,179,653	48,112,384
Other liabilities	428,932	403,823
Long-term notes payable	271,020,389	271,106,387
Parent [Member]
Current assets
Prepaid expenses	367,498	194,244
Income tax receivables	0	0
Deferred income tax asset current	816,933	726,310
Investment in subsidiaries	35,408,275	147,614,140
Intercompany receivable	(185,695,157)	(154,849,721)
Total current assets	(149,102,451)	(6,315,027)
Goodwill	239,970,317	239,970,317
Investments	1,203,605	1,203,605
Deferred income tax asset noncurrent	7,575,073	7,454,443
Other long-term assets	4,058,049	4,485,324
Total assets	103,704,593	246,798,662
Current liabilities
Accounts payable and accrued expenses	4,849,514	1,306,872
Other current liabilities	387,720	353,285
Total current liabilities	5,237,234	1,660,157
Deferred income tax liabilities noncurrent	9,284,544	26,421,911
Other liabilities		241,438
Long-term notes payable	230,756,913	230,842,911
Stockholders' equity (deficit)	(141,574,098)	(12,367,755)
Total liabilities and stockholders' equity (deficit)	103,704,593	246,798,662
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	27,184,339	12,393,441
Accounts receivable, net	11,136,321	11,445,049
Materials and supplies	984,276	827,194
Prepaid expenses	1,142,761	1,115,339
Income tax receivables	0	0
Intercompany receivable	(12,222,753)	(688,391)
Total current assets	28,224,944	25,092,632
Property and equipment, net	56,591,235	64,524,981
Goodwill	(121,910,761)	(47,435,761)
Intangible assets, net	7,156,627	18,186,227
Investments	413,053	432,186
Other long-term assets	505,358	240,667
Total assets	(29,019,544)	61,040,932
Current liabilities
Accounts payable and accrued expenses	6,350,555	4,793,854
Intercompany payables	(185,695,157)	(154,849,721)
Other current liabilities	1,608,956	1,668,933
Total current liabilities	(177,735,646)	(148,386,934)
Deferred income tax liabilities noncurrent	13,524,731	20,354,646
Other liabilities	1,230,853	1,019,407
Long-term notes payable	40,263,476	40,263,476
Stockholders' equity (deficit)	93,697,042	147,790,337
Total liabilities and stockholders' equity (deficit)	(29,019,544)	61,040,932
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	350	351
Accounts receivable, net	623,214	543,122
Materials and supplies	1,015,424	953,626
Prepaid expenses	(5,097)	18,892
Income tax receivables	0	0
Intercompany receivable	12,222,753	688,391
Total current assets	13,856,644	2,204,382
Property and equipment, net	1,333,905	1,356,994
Goodwill	(73,102,716)	(3,579,716)
Intangible assets, net	1,122,282	2,359,464
Investments	308,014	308,014
Total assets	(56,481,871)	2,649,138
Current liabilities
Accounts payable and accrued expenses	1,359,490	1,424,095
Other current liabilities	77,028	65,413
Total current liabilities	1,436,518	1,489,508
Deferred income tax liabilities noncurrent	370,378	1,335,827
Stockholders' equity (deficit)	(58,288,767)	(176,197)
Total liabilities and stockholders' equity (deficit)	(56,481,871)	2,649,138
Eliminations [Member]
Current assets
Income tax receivables	0	0
Investment in subsidiaries	(35,408,275)	(147,614,140)
Intercompany receivable	185,695,157	154,849,721
Total current assets	150,286,882	7,235,581
Total assets	150,286,882	7,235,581
Current liabilities
Intercompany payables	185,695,157	154,849,721
Total current liabilities	185,695,157	154,849,721
Stockholders' equity (deficit)	(35,408,275)	(147,614,140)
Total liabilities and stockholders' equity (deficit)	150,286,882	7,235,581
Consolidated [Member]
Current assets
Cash and cash equivalents	27,184,689	12,393,792
Accounts receivable, net	11,759,535	11,988,171
Materials and supplies	1,999,700	1,780,820
Prepaid expenses	1,505,162	1,328,475
Income tax receivables	0	0
Deferred income tax asset current	816,933	726,310
Total current assets	43,266,019	28,217,568
Property and equipment, net	57,925,140	65,881,975
Goodwill	44,956,840	188,954,840
Intangible assets, net	8,278,909	20,545,691
Investments	1,924,672	1,943,805
Deferred income tax asset noncurrent	7,575,073	7,454,443
Other long-term assets	4,563,407	4,725,991
Total assets	168,490,060	317,724,313
Current liabilities
Accounts payable and accrued expenses	12,559,559	7,524,821
Other current liabilities	2,073,704	2,087,631
Total current liabilities	14,633,263	9,612,452
Deferred income tax liabilities noncurrent	23,179,653	48,112,384
Other liabilities	1,230,853	1,260,845
Long-term notes payable	271,020,389	271,106,387
Stockholders' equity (deficit)	(141,574,098)	(12,367,755)
Total liabilities and stockholders' equity (deficit)	$ 168,490,060	$ 317,724,313