Note 4 - Repurchase of Equity Securities (Detail)	Jun. 30, 2012	Oct. 21, 2009
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		2,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,000,000

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant