Note 11 - Junior Subordinated Debentures (Details) - Junior Subordinated Debentures - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Subordinated Borrowing [Line Items]
Junior subordinated debentures	$ 38,499,052	$ 40,423,735
Market Value Discount per ASC 805 (see Note 2)	(2,225,948)	(2,363,265)
Note Payable to Trust II [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	10,310,000	12,372,000
Note Payable to Trust III [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	8,248,000	8,248,000
Note Payable to Trust IV [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	5,155,000	5,155,000
Note Payable to Trust V [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	10,310,000	10,310,000
Community National Trust II Member
Subordinated Borrowing [Line Items]
Junior subordinated debentures	3,093,000	3,093,000
Community National Trust III [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	$ 3,609,000	$ 3,609,000