Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 55,490	$ 34,742
Accounts receivable	48,217	65,171
Prepaid expenses and other current assets	82,896	60,318
Total Current Assets	186,603	160,231
Property and Equipment, Net ($370,815 and $368,660 not subject to amortization at March 31, 2014 and December 31, 2013, respectively)	1,053,775	1,072,151
Goodwill	259,238	259,238
Other Assets	32,997	33,222
Total Assets	1,532,613	1,524,842
Current Liabilities:
Accounts payable	56,199	38,033
Current maturities of debt	2,140
Deferred revenue	2,152	20,965
Monetary production payment, current portion	120,833	74,167
Accrued expenses and other	79,219	88,625
Total Current Liabilities	260,543	221,790
Long-Term Debt	891,829	870,878
Deferred Taxes	173,847	146,213
Monetary production payment, long-term portion	40,833	92,500
Other Liabilities	127,789	131,370
Total Liabilities	1,494,841	1,462,751
Commitments and Contingencies
Series C Convertible Preferred Stock:
Series C preferred stock: Liquidation preference - $37,000 and $37,000 at March 31, 2014 and December 31, 2013, respectively	43,703	43,703
Stockholders Equity:
Common stock; shares issued and outstanding - 50,395 and 46,981 shares at March 31, 2014 and December 31, 2013, respectively	50	47
Additional paid-in capital	531,066	510,062
Treasury stock, at cost - 72 and 72 shares at March 31, 2014 and December 13, 2013, respectively	(587)	(587)
Accumulated deficit	(536,460)	(491,134)
Total Stockholders' Equity	(5,931)	18,388
Total Liabilities and Stockholders' Equity	1,532,613	1,524,842
Series C Preferred Stock [Member]
Series C Convertible Preferred Stock:
Series C preferred stock: Liquidation preference - $37,000 and $37,000 at March 31, 2014 and December 31, 2013, respectively	43,703	43,703
Series B Preferred Stock [Member]
Stockholders Equity:
Series B preferred stock - Liquidation preference: $3,785 and $3,745 at March 31, 2014 and December 31, 2013, respectively