Note 5 - Deposits (Tables)

3 Months Ended

Mar. 31, 2016

Disclosure Text Block [Abstract]

Summary of Deposits and Percentage Change in Deposits [Table Text Block]

											Percent
	March 31, 2016					December 31, 2015					Increase
	Balance		%			Balance		%			(Decrease)
Noninterest-bearing demand	$	678,100,000		29.9	%	$	674,568,000		29.6	%		0.5	%
Interest-bearing checking		372,519,000		16.4			403,354,000		17.7			(7.6	)
Money market		309,906,000		13.7			274,395,000		12.1			12.9
Savings		339,089,000		15.0			332,794,000		14.6			1.9
Time, under $100,000		152,008,000		6.7			155,655,000		6.9			(2.3	)
Time, $100,000 and over		309,842,000		13.7			313,247,000		13.8			(1.1	)
		2,161,464,000		95.4			2,154,013,000		94.7			0.3
Out-of-area time, under $100,000		149,000	< 0.1				149,000	< 0.1				0.0
Out-of-area time, $100,000 and over		103,509,000		4.6			121,220,000		5.3			(14.6	)
		103,658,000		4.6			121,369,000		5.3			(14.6	)
Total deposits	$	2,265,122,000		100.0	%	$	2,275,382,000		100.0	%		(0.5%	)