Common Stock (Controlled Equity Offering) (Details) - Equity Distribution Agreement $ in Thousands	Apr. 30, 2019 USD ($)
Components Of Common Stock [Line Items]
Percentage of commission	3.00%
Maximum aggregate offering price of equity securities	$ 24,650

Maximum aggregate offering price of equity securities.

No definition available.

Name:	ampe_MaximumAggregateOfferingPriceOfEquitySecurities
Namespace Prefix:	ampe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant