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Commitments and Contingencies (Details) $ in Millions | Nov. 15, 2017 USD ($) | Dec. 31, 2017 lawsuit
--- | --- | ---
Commitments and Contingencies |  |
Number of purported securities class action lawsuits |  | 3
Number of purported securities class action lawsuits naming additional company officers as defendants |  | 1
Settlement Fund for class members | $ | $ 3.8 |

X
- Definition Number of lawsuits commenced + References No definition available. + Details
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Namespace Prefix: | fold_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of lawsuit that list one or more of the entity's officers as named defendant(s) + References No definition available. + Details
Name: | fold_NumberOfLawsuitsNamingAdditionalOfficer
Namespace Prefix: | fold_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration