Principal Risk (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Principal Risk (Textual)
Exposed to credit risk on the cash held with the Custodian/Prime Broker amount	$ 122,127	$ 112,746

Exposed to credit risk on the cash held with the Custodian/Prime Broker amount.

No definition available.

Name:	APM_ExposedToCreditRiskOnCashHeldWithCustodianAndPrimeBrokerAmount
Namespace Prefix:	APM_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant