Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statement of Cash Flows Supplemental Disclosures ( Non-cash investing and financing activities) (Details)

v2.4.0.8
Consolidated Statement of Cash Flows Supplemental Disclosures ( Non-cash investing and financing activities) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Supplemental Cash Flow Elements [Abstract]    
Non-cash additions for purchases of property and equipment $ 9,779 $ 8,322
Net capital lease obligation adjustment 9,385 0
Distribution to non-controlling interest 4,167 0
Asset retirement obligation additions to property and equipment 361 989
Deferred compensation distribution denominated in shares $ 617 $ 621