Note 5 - Income Taxes (Detail) - Details of the Company's tax reserves (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Tax reserve	$ 93,000	$ 65,000	$ 43,000
Taxes [Member] | State and Local Jurisdiction [Member]
Tax reserve	73,000
Taxes [Member]
Tax reserve	73,000
Interest [Member] | State and Local Jurisdiction [Member]
Tax reserve	15,000
Interest [Member]
Tax reserve	15,000
Penalty [Member] | State and Local Jurisdiction [Member]
Tax reserve	6,000
Penalty [Member]
Tax reserve	6,000
State and Local Jurisdiction [Member]
Tax reserve	$ 93,000