Rendering

Component: (Network and Table)
Network
1101 - Disclosure - Retirement Plans - Summary of Net Periodic Pension Expense for ACS Retirement Plan (Detail)
(http://www.alsk.com/taxonomy/role/DisclosureRetirementPlansSummaryOfNetPeriodicPensionExpenseForACSRetirementPlan)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001089511 (http://www.sec.gov/CIK)
Compensation and Retirement Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Compensation and Retirement Disclosure [Abstract]
 
 
 
Interest cost
668,000  
666,000  
664,000  
Expected return on plan assets
(373,000) 
(659,000) 
(749,000) 
Amortization of loss
367,000  
929,000  
536,000  
Net periodic pension expense
662,000  
 
936,000  
 
451,000