Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.0.8
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Statement Of Financial Position [Abstract]    
Oil and natural gas properties and equipment - full cost method, amount excluded from amortization $ 123,903 $ 116,612
Preferred stock, par value $ 0.00001 $ 0.00001
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, issued 0 0
Common stock, par value $ 0.00001 $ 0.00001
Common stock, shares authorized 118,330,000 118,330,000
Common stock, issued 78,525,731 78,460,872
Common stock, outstanding 75,656,558 75,591,699