Note 4 - Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 1.4
Annual Deductible Amount of Operating Loss Carryforward, Limit Amount	$ 0.3

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

No definition available.

Name:	us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant