| Component: (Network and Table) | |
|---|---|
| Network | 2324301 - Disclosure - Equity Awards (Tables) (http://www.armstrongenergyinc.com/role/EquityAwardsTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001532288 (http://www.sec.gov/CIK) |
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | Period [Axis] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-01-01 - 2016-12-31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Summary of Restricted Stock Activity | Information regarding restricted shares activity and weighted-average grant-date fair value follows for the year ended December 31, 2016:
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