Note J - Commitments And Contingencies (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Letters of Credit Outstanding, Amount	$ 378,000	$ 280,000

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant