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Note 3 - Concentration of Credit Risk (Detail) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Cash, Uninsured Amount	$ 3,878,000	$ 4,249,000

X

- Definition

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

+ Details

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