Note 11 - Stockholders' Equity (Details) - Stock Option Transactions (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items]
Granted (in Shares)	12,000	12,000	12,000
Granted	$ 6.87	$ 5.27	$ 4.80
Exercised (in Shares)	(49,000)	(6,000)	0
Exercised	$ 4.23	$ 3.50
Outstanding at December 31 (in Shares)	84,600
Outstanding at December 31	$ 5.04
Weighted-average fair value of options granted during year	$ 0.97	$ 0.83	$ 1.19
Director 2007 Non-Qualified Stock Option Plan [Member] | Year 2013 [Member]
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items]
Outstanding at January 1 (in Shares)	121,600
Outstanding at January 1	$ 4.53
Granted (in Shares)	12,000
Granted	$ 6.87
Exercised (in Shares)	(49,000)
Exercised	$ 4.23
Outstanding at December 31 (in Shares)	84,600
Outstanding at December 31	$ 5.04
Exercisable at end of year (in Shares)	84,600
Exercisable at end of year	$ 5.04
Weighted-average fair value of options granted during year	$ 0.97
Director 2007 Non-Qualified Stock Option Plan [Member] | Year 2012 [Member]
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items]
Outstanding at January 1 (in Shares)		115,600
Outstanding at January 1		$ 4.40
Granted (in Shares)		12,000
Granted		$ 5.27
Exercised (in Shares)		(6,000)
Exercised		$ 3.50
Outstanding at December 31 (in Shares)		121,600
Outstanding at December 31		$ 4.53
Exercisable at end of year (in Shares)		121,600
Exercisable at end of year		$ 4.53
Weighted-average fair value of options granted during year		$ 0.83
Director 2007 Non-Qualified Stock Option Plan [Member] | Year 2011 [Member]
Note 11 - Stockholders' Equity (Details) - Stock Option Transactions [Line Items]
Outstanding at January 1 (in Shares)			103,600
Outstanding at January 1			$ 4.35
Granted (in Shares)			12,000
Granted			$ 4.80
Outstanding at December 31 (in Shares)			115,600
Outstanding at December 31			$ 4.40
Exercisable at end of year (in Shares)			115,600
Exercisable at end of year			$ 4.40
Weighted-average fair value of options granted during year			$ 1.19