Note 3 - Financial Condition (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
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