Note 16 - Common Stock Offering (Details) - USD ($)			12 Months Ended
	Mar. 07, 2014	Jan. 30, 2009	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015
Note 16 - Common Stock Offering (Details) [Line Items]
Proceeds from Issuance of Common Stock (in Dollars)	$ 15,800,000		$ 15,814,312
Stock Issued During Period, Shares, New Issues			0.05	0.05
Treasury Stock, Shares			2,492,552		2,466,462
Underwritten Offering [Member]
Note 16 - Common Stock Offering (Details) [Line Items]
Proceeds from Issuance of Common Stock (in Dollars)	$ 17,200,000
Common Stock [Member] | Underwritten Offering [Member]
Note 16 - Common Stock Offering (Details) [Line Items]
Stock Issued During Period, Shares, New Issues	1,499,999
Common Stock [Member] | Over-Allotment Option [Member]
Note 16 - Common Stock Offering (Details) [Line Items]
Stock Issued During Period, Shares, New Issues	195,652
Share Price (in Dollars per share)	$ 11.50
Series A Preferred Stock [Member]
Note 16 - Common Stock Offering (Details) [Line Items]
Stock Issued During Period, Shares, New Issues		17,000
Treasury Stock, Shares	12,000