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 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Consolidated Condensed Statements of Operations [Abstract]        
Revenues $ 178,925 $ 172,812 $ 355,494 $ 328,991
Expenses:        
Operating expenses 104,526 104,683 199,458 212,059
Depreciation and amortization 27,959 27,332 55,578 54,931
Total expenses 132,485 132,015 255,036 266,990
Total operating gross margin 46,440 40,797 100,458 62,001
General and administration expense (7,420) (7,948) (12,917) (14,752)
Gain on disposition of assets, net 1,368 366 1,860 1,370
Total operating income 40,388 33,215 89,401 48,619
Other income and (expense):        
Interest expense (8,925) (5,755) (16,962) (11,616)
Interest income 53 133 79 179
Loss on extinguishment of debt (1,649)   (1,649)  
Change in fair value of derivative positions 38 (137) (11) (137)
Other 20 123 36 134
Total other expense (10,463) (5,636) (18,507) (11,440)
Income before income taxes 29,925 27,579 70,894 37,179
Income tax expense 9,817 13,464 24,460 18,303
Net income 20,108 14,115 46,434 18,876
Less: Net income (loss) attributable to noncontrolling interest 25 (58) (41) (125)
Net income attributable to controlling interest $ 20,083 $ 14,173 $ 46,475 $ 19,001
Basic earnings per share $ 0.17 $ 0.12 $ 0.40 $ 0.16
Diluted earnings per share $ 0.17 $ 0.12 $ 0.39 $ 0.16
Number of common shares used in computing earnings per share:        
Basic 117,410,212 116,144,818 117,129,364 115,634,881
Diluted 118,526,879 117,253,588 118,623,037 116,750,717