Note 11 - Stockholders' Equity (Details) - Stock Option Plan (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 11 - Stockholders' Equity (Details) - Stock Option Plan [Line Items]
Number of shares, Exercised during period	16,650	68,210
Number of shares, Ending balance outstanding	187,730
Number of shares, Exercisable	162,730
The 1989 Non-Qualified Stock Option Plan [Member]
Note 11 - Stockholders' Equity (Details) - Stock Option Plan [Line Items]
Number of shares, Beginning balance outstanding	41,900	102,000
Number of shares, Granted during period	0	0
Number of shares, Exercised during period	6,650	60,100
Number of shares, Canceled during period	0	0
Number of shares, Ending balance outstanding	35,250	41,900
Number of shares, Exercisable	35,250	41,900
Weighted average exercise price per share, Beginning balance outstanding (in Dollars per share)	$ 4.82	$ 4.35
Weighted average exercise price per share, Granted during period (in Dollars per share)	$ 0	$ 0
Weighted average exercise price per share, Exercised during period (in Dollars per share)	$ 0	$ 0
Weighted average exercise price per share, Canceled during period (in Dollars per share)	$ 0	$ 0
Weighted average exercise price per share, Ending balance outstanding (in Dollars per share)	$ 4.62	$ 4.82
Weighted average exercise price per share, Exercisable (in Dollars per share)	$ 4.62	$ 4.82
The 2001 Non-Qualified Stock Option Plan [Member]
Note 11 - Stockholders' Equity (Details) - Stock Option Plan [Line Items]
Number of shares, Beginning balance outstanding	162,480	170,590
Number of shares, Granted during period	0	0
Number of shares, Exercised during period	10,000	8,110
Number of shares, Canceled during period	0	0
Number of shares, Ending balance outstanding	152,480	162,480
Number of shares, Exercisable	127,480	124,980
Weighted average exercise price per share, Beginning balance outstanding (in Dollars per share)	$ 4.35	$ 4.41
Weighted average exercise price per share, Granted during period (in Dollars per share)	$ 0	$ 0
Weighted average exercise price per share, Exercised during period (in Dollars per share)	$ 0	$ 0
Weighted average exercise price per share, Canceled during period (in Dollars per share)	$ 0	$ 0
Weighted average exercise price per share, Ending balance outstanding (in Dollars per share)	$ 4.40	$ 4.35
Weighted average exercise price per share, Exercisable (in Dollars per share)	$ 4.35	$ 4.27
The 2007 Share Incentive Plan [Member]
Note 11 - Stockholders' Equity (Details) - Stock Option Plan [Line Items]
Number of shares, Beginning balance outstanding	200	200
Number of shares, Granted during period	0	0
Number of shares, Exercised during period	0	0
Number of shares, Canceled during period	200	0
Number of shares, Ending balance outstanding	0	200
Number of shares, Exercisable	0	200
Weighted average exercise price per share, Beginning balance outstanding (in Dollars per share)	$ 11.51	$ 11.51
Weighted average exercise price per share, Ending balance outstanding (in Dollars per share)		$ 11.51
Weighted average exercise price per share, Exercisable (in Dollars per share)		$ 11.51