Note 10 - Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank Advances [Member]
FHLB advances, net of discount, due 2016 to 2033, 0.35% to 7.37% secured by residential real estate loans	$ 125,603	$ 109,989
Note Payable Due 10/15/2020 [Member]
Notes payable, due 10/15/2020, 3.85%, fixed rate, unsecured	51,226	52,300
Trust Preferred Securities Due 12/30/2033 Floating Rate of 2.8% Above Three Month LIBOR 1 [Member]
Subordinated Debentures	20,620	20,620
Trust Preferred Securities Due 6/30/2035 [Member]
Subordinated Debentures	9,149	9,723
Trust Preferred Securities Due 9/15/2037 [Member]
Subordinated Debentures	10,014	9,975
Trust Preferred Securities Due 12/3/2033 [Member]
Subordinated Debentures	5,165	5,167
Trust Preferred Securities Due 12/13/2034 [Member]
Subordinated Debentures	5,073	5,063
Trust Preferred Securities, Due 6/6/2037 [Member]
Subordinated Debentures	10,056	10,022
Total other borrowings	176,829	162,289
Subordinated Debentures	60,077	60,570
Total other borrowings and subordinated debentures	$ 236,906	$ 222,859