Rendering

Component: (Network and Table)
Network
1081 - Disclosure - Asset Retirement Obligations - Schedule of Changes in Asset Retirement Obligation (Detail)
(http://www.alsk.com/taxonomy/role/DisclosureAssetRetirementObligationsScheduleOfChangesInAssetRetirementObligation)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001089511 (http://www.sec.gov/CIK)
Asset Retirement Obligation Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Asset Retirement Obligation Disclosure [Abstract]
 
 
 
Beginning Balance
3,429,000  
4,055,000  
 
Asset retirement obligation
159,000  
254,000  
369,000  
Accretion expense
182,000  
179,000  
 
Settlement of obligations
(62,000) 
(106,000) 
 
Revisions in estimated cash flows
 
(953,000) 
 
Ending Balance
3,708,000  
 
3,429,000  
 
4,055,000