Note 5 - Supplemental Cash Flow Information (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Note 5 - Supplemental Cash Flow Information (Details) [Line Items]
Income Taxes Paid	$ 3,284,000	$ 1,533,000
Interest Paid	$ 301,000	$ 76,000
Company Stock Received, in Lieu of Cash, Stock Options Exercised (in Shares)	10,128
Common Stock [Member]
Note 5 - Supplemental Cash Flow Information (Details) [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares)	20,408