Note 3 - Financial Condition (Details) $ in Millions	6 Months Ended
Jun. 30, 2015 USD ($)
Financial Condition [Abstract]
Debtor Reorganization Items, Debts Discharged in Excess of Amount	$ 4

Debts discharged in excess of amount as part of the Plan of Reorganization.

No definition available.

Name:	amar_DebtorReorganizationItemsDebtsDischargedInExcessOfAmount
Namespace Prefix:	amar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration