v3.6.0.2

Exploratory Well Costs | 12 Months Ended
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Dec. 31, 2016
Capitalized Exploratory Well Costs [Abstract] |
Exploratory Well Costs | Exploratory Well Costs EOG's net changes in capitalized exploratory well costs for the years ended December 31, 2016, 2015 and 2014 are presented below (in thousands):
| 2016 |  | 2015 |  | 2014
Balance at January 1 | $ | 8,955 |  |  | $ | 17,253 |  |  | $ | 9,211 |
Additions Pending the Determination of Proved Reserves | 6,688 |  |  | 24,640 |  |  | 32,080 |
Reclassifications to Proved Properties | (5,274 | ) |  | (26,659 | ) |  | (15,946 | )
Costs Charged to Expense (1) | (10,369 | ) |  | (6,279 | ) |  | (8,092 | )
Balance at December 31 | $ | — |  |  | $ | 8,955 |  |  | $ | 17,253 |
(1) | Includes capitalized exploratory well costs charged to either dry hole costs or impairments.
At December 31, 2016, 2015 and 2014, all exploratory well costs had been capitalized for periods of less than one year.

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- Definition The entire disclosure for parts or all of the information related to suspended well costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447 + Details
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