v2.4.0.6

Other long-term liabilities | 12 Months Ended
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Dec. 31, 2012
Other long-term liabilities |
Other long-term liabilities | 8. Other long-term liabilities Other long-term liabilities consist of the following:
|  | 2012 |  | 2011 |
--- | --- | --- | --- | --- | ---
Asset retirement obligations |  | $ | 57,816 |  | $ | 52,336 |
Net pension liability |  |  | 4,811 |  |  | 2,243 |
Deferred revenue |  |  | 4,919 |  |  | 1,623 |
Other |  |  | 3,828 |  |  | 1,657 |
|  | $ | 71,374 |  | $ | 57,859 |
We assumed asset retirement obligations ("ARO") in our acquisition of the Partnership. During 2012, we also recorded asset retirement obligations related to the Canadian Hills project. We recorded these retirement obligations as we are legally required to remove these facilities at the end of their useful lives and restore the sites to their original condition. The following table represents the fair value of ARO at the date of acquisition along with the additions, reductions and accretion related to our ARO for the year ended December 31, 2012:
|  | 2012 |
--- | --- | --- | ---
Asset retirement obligations beginning of year |  | $ | 52,336 |
Asset retirement obligation additions |  |  | 3,466 |
Accretion of asset retirement obligations |  |  | 1,590 |
Translation adjustments |  |  | 424 |
Asset retirement obligations, end of year |  | $ | 57,816 |

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- Definition The entire disclosure for other liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 24 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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