| Component: (Network and Table) | |
|---|---|
| Network | 1118 - Disclosure - Stock Incentive Plans - Summary of Activity for Restricted Stock Units, Long-Term Incentive Awards and Non-Employee Director Stock Compensation (Detail) (http://www.alsk.com/taxonomy/role/DisclosureStockIncentivePlansSummaryOfActivityForRestrictedStockUnitsLongTermIncentiveAwardsAndNonEmployeeDirectorStockCompensation) |
| Table | Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] |
| Reporting Entity [Axis] | 0001089511 (http://www.sec.gov/CIK) |
| Award Type [Axis] | Restricted Stock Unit [Member] |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Period [Axis] |
|---|---|
2016-01-01 - 2016-12-31 | |
Summary of activity for restricted stock units, long-term incentive awards and non-employee director stock compensation | |
Number of Shares - Nonvested at December 31, 2015 | |
Number of Shares - Granted | |
Number of Shares - Vested | ( |
Number of Shares - Canceled or expired | |
Number of Shares - Nonvested at December 31, 2016 | |
Weighted Average Grant Date Fair Value - Nonvested at December 31, 2015 | |
Weighted Average Grant Date Fair Value - Granted | |
Weighted Average Grant Date Fair Value - Vested | |
Weighted Average Grant Date Fair Value - Canceled or expired | |
Weighted Average Grant Date Fair Value - Nonvested at December 31, 2016 |