Note 7 - Subsidiary Guarantees (Detail) - Condensed Consolidating Balance Sheets (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 34,293,319	$ 32,516,283	$ 16,041,879	$ 12,393,792
Accounts receivable, net	4,083,418	4,205,944
Total current assets	50,500,688	49,732,060
Property and equipment, net	56,571,853	58,242,903
Goodwill	44,956,840	44,956,840
Intangible assets, net	5,580,929	6,670,392
Investments	1,912,950	1,919,327
Other long-term assets	529,965	490,131
Total assets	168,459,775	172,324,961
Current liabilities
Accounts payable and accrued expenses	1,075,570	2,007,405
Current notes payable		270,990,023
Total current liabilities	9,398,300	289,979,729
Liabilities subject to compromise	278,827,862
Other liabilities	159,704	484,019
Parent [Member]
Current assets
Cash and cash equivalents	230,856
Prepaid expenses	562,855	459,021
Deferred income taxes	1,843,160	1,843,160
Investment in subsidiaries	76,911,315	72,218,114
Intercompany receivable	(224,623,263)	(219,453,880)
Total current assets	(145,075,077)	(144,933,585)
Goodwill	239,970,317	239,970,317
Investments	1,203,605	1,203,605
Deferred income taxes	6,275,997	6,275,997
Other long-term assets	2,130,553	4,037,311
Total assets	104,505,395	106,553,645
Current liabilities
Accounts payable and accrued expenses	473,846	8,585,915
Other current liabilities	430,896	430,896
Current notes payable		230,726,547
Total current liabilities	904,742	239,743,358
Liabilities subject to compromise	238,564,386
Deferred income taxes	8,407,880	8,407,880
Stockholders' equity (deficit)	(143,371,613)	(141,597,593)
Total liabilities and stockholders' equity (deficit)	104,505,395	106,553,645
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	34,061,963	32,515,933
Accounts receivable, net	9,195,452	11,160,581
Materials and supplies	1,140,587	1,165,042
Prepaid expenses	2,244,771	1,555,192
Intercompany receivable	(30,017,903)	(29,764,405)
Total current assets	16,624,870	16,632,343
Property and equipment, net	55,136,554	56,819,459
Goodwill	(121,910,761)	(121,910,761)
Intangible assets, net	4,522,777	5,580,175
Investments	401,331	407,708
Other long-term assets	529,965	490,131
Total assets	(44,695,264)	(41,980,945)
Current liabilities
Accounts payable and accrued expenses	5,445,001	6,980,505
Intercompany payables	(224,623,263)	(219,453,880)
Other current liabilities	1,522,789	1,581,987
Current notes payable		40,263,476
Total current liabilities	(217,655,473)	(170,627,912)
Liabilities subject to compromise	40,263,476
Deferred income taxes	12,970,082	12,970,082
Other liabilities	935,058	1,272,657
Stockholders' equity (deficit)	118,791,593	114,404,228
Total liabilities and stockholders' equity (deficit)	(44,695,264)	(41,980,945)
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	500	350
Accounts receivable, net	417,521	385,159
Materials and supplies	783,604	680,204
Prepaid expenses	19,419	(32,582)
Intercompany receivable	30,017,903	29,764,405
Total current assets	31,238,947	30,797,536
Property and equipment, net	1,435,299	1,423,444
Goodwill	(73,102,716)	(73,102,716)
Intangible assets, net	1,058,152	1,090,217
Investments	308,014	308,014
Total assets	(39,062,304)	(39,483,505)
Current liabilities
Accounts payable and accrued expenses	1,447,928	1,341,363
Other current liabilities	77,840	69,040
Total current liabilities	1,525,768	1,410,403
Deferred income taxes	1,292,206	1,292,206
Stockholders' equity (deficit)	(41,880,278)	(42,186,114)
Total liabilities and stockholders' equity (deficit)	(39,062,304)	(39,483,505)
Eliminations [Member]
Current assets
Investment in subsidiaries	(76,911,315)	(72,218,114)
Intercompany receivable	224,623,263	219,453,880
Total current assets	147,711,948	147,235,766
Total assets	147,711,948	147,235,766
Current liabilities
Intercompany payables	224,623,263	219,453,880
Total current liabilities	224,623,263	219,453,880
Stockholders' equity (deficit)	(76,911,315)	(72,218,114)
Total liabilities and stockholders' equity (deficit)	147,711,948	147,235,766
Consolidated [Member]
Current assets
Cash and cash equivalents	34,293,319	32,516,283
Accounts receivable, net	9,612,973	11,545,740
Materials and supplies	1,924,191	1,845,246
Prepaid expenses	2,827,045	1,981,631
Deferred income taxes	1,843,160	1,843,160
Total current assets	50,500,688	49,732,060
Property and equipment, net	56,571,853	58,242,903
Goodwill	44,956,840	44,956,840
Intangible assets, net	5,580,929	6,670,392
Investments	1,912,950	1,919,327
Deferred income taxes	6,275,997	6,275,997
Other long-term assets	2,660,518	4,527,442
Total assets	168,459,775	172,324,961
Current liabilities
Accounts payable and accrued expenses	7,366,775	16,907,783
Other current liabilities	2,031,525	2,081,923
Current notes payable		270,990,023
Total current liabilities	9,398,300	289,979,729
Liabilities subject to compromise	278,827,862
Deferred income taxes	22,670,168	22,670,168
Other liabilities	935,058	1,272,657
Stockholders' equity (deficit)	(143,371,613)	(141,597,593)
Total liabilities and stockholders' equity (deficit)	$ 168,459,775	$ 172,324,961