Quarterly report pursuant to Section 13 or 15(d)

Consolidated Condensed Statements of Operations (Unaudited)

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Consolidated Condensed Statements of Operations (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Consolidated Condensed Statements of Operations [Abstract]    
Revenues $ 176,569 $ 156,179
Expenses:    
Operating expenses 94,932 107,376
Depreciation and amortization 27,619 27,599
Total expenses 122,551 134,975
Total operating gross margin 54,018 21,204
General and administration expense (5,497) (6,806)
Gain on disposition of assets, net 492 1,004
Total operating income 49,013 15,402
Other income and (expense):    
Interest expense (8,037) (5,861)
Interest income 26 47
Change in fair value of derivative positions (49)  
Other 16 11
Total other expense (8,044) (5,803)
Income before income taxes 40,969 9,599
Income tax expense:    
Current tax expense 9,631 4,018
Deferred tax expense 5,012 821
Total income tax expense 14,643 4,839
Net income 26,326 4,760
Less: Net (loss) attributable to noncontrolling interest (66) (67)
Net income attributable to controlling interest $ 26,392 $ 4,827
Basic earnings per share: $ 0.23 $ 0.04
Diluted earnings per share: $ 0.22 $ 0.04
Number of common shares used in computing earnings per share:    
Basic 116,848,516 115,119,277
Diluted 118,404,491 116,322,199