|
Information about Oil and Gas Producing Activities (Schedule of Changes in the Standardized Measure for Discounted Cash Flows) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Information about Oil and Gas Producing Activities [Abstract] | ||
| Net change in sales and transfer prices and in production costs related to future production | $ 2,364 | $ (697) |
| Sales and transfers of oil and gas produced during the period | (1,983) | (3,365) |
| Net change due to extensions, discoveries, and improved recovery | 5,342 | 3,445 |
| Changes in estimated future development costs | 1,081 | 1,782 |
| Net change due to revisions in quantities estimates | 2,949 | 1,113 |
| Accretion of discount | 833 | 668 |
| Other | (1,569) | (1,292) |
| Aggregate change in the standardized measure of discounted future net cash flows for the year | $ 9,017 | $ 1,654 |