Rendering

Component: (Network and Table)
Network
2319301 - Disclosure - Asset retirement obligations ('ARO') (Tables)
(http://www.centuryca.com/role/AssetRetirementObligationsAroTables)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000949157 (http://www.sec.gov/CIK)
Asset Retirement Obligation Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
Asset Retirement Obligation Disclosure [Abstract]
 
Schedule of changes in asset retirement obligations
The reconciliation of the changes in the asset retirement obligations is presented below:
 
Year ended December 31,
 
2016
2015
Beginning balance, ARO liability
$
35,165

$
36,950

Additional ARO liability incurred
1,272

3,797

ARO liabilities settled
(1,930
)
(5,514
)
Accretion expense
1,903

1,818

Adjustments
(992
)
(1,886
)
Ending balance, ARO liability
$
35,418

$
35,165