Annual report pursuant to Section 13 and 15(d)

Description of Business and Basis of Presentation (Details)

v2.4.0.8
Description of Business and Basis of Presentation (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Production taxes $ 4,133 $ 3,224 $ 2,062
Restatement Adjustment [Member]
     
Production taxes   $ 3,224 $ 2,062