SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advance Royalties (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Advance Royalties
Allowance against royalty prepayments	$ 6,200	$ 3,800
Advance royalties, affiliates (see Note 18 - Related Party Transactions)	19,820	16,190
Advance royalties, third-parties	10,759	11,925
Total advance royalties, net	$ 30,579	$ 28,115

Carrying amount as of the balance sheet date of capitalized amounts paid to third parties for mineral royalties.

No definition available.

Name:	ahgp_PrepaidMineralRoyaltiesCurrentAndNoncurrentThirdParties
Namespace Prefix:	ahgp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant