Income Taxes (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Income Tax [Line Items]    
Deferred tax assets, current $ 54 $ 89
Deferred tax liabilities, noncurrent 601 156
Pioneer Natural Resources Co [Member]
   
Income Tax [Line Items]    
Income taxes payable to affiliate $ 148 $ 70
Texas [Member]
   
Income Tax [Line Items]    
Margin Tax Rate (As a Percent) 1.00%