Quarterly report pursuant to Section 13 or 15(d)

Summary of Proforma Financial Information for Acquisition (Detail)

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Summary of Proforma Financial Information for Acquisition (Detail) (Callon Properties, USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Callon Properties
 
Business Acquisition [Line Items]  
Revenue $ 270,575
Net income $ 29,618
Basic and diluted earnings per common share $ 0.39