Note 8 - Deposits (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	December 31, 2016					December 31, 2015					Percent Increase
	Balance		%			Balance		%			(Decrease)
Noninterest-bearing demand	$	810,600,000		34.1	%	$	674,568,000		29.6	%		20.2	%
Interest-bearing checking		377,929,000		15.9			403,354,000		17.7			(6.3	)
Money market		272,051,000		11.5			274,395,000		12.1			(0.9	)
Savings		344,988,000		14.5			332,794,000		14.6			3.7
Time, under $100,000		146,169,000		6.2			155,655,000		6.9			(6.1	)
Time, $100,000 and over		347,058,000		14.6			313,247,000		13.8			10.8
Total local deposits		2,298,795,000		96.8			2,154,013,000		94.7			6.7
Out-of-area time, under $100,000		0		NM			149,000	< 0.1				NM
Out-of-area time, $100,000 and over		76,190,000		3.2			121,220,000		5.3			(37.1	)
Total out-of-area deposits		76,190,000		3.2			121,369,000		5.3			(37.2	)
Total deposits	$	2,374,985,000		100.0	%	$	2,275,382,000		100.0	%		4.4	%

Contractual Maturities of Certificates of Deposits [Table Text Block]

	2016		2015
In one year or less	$	358,259,000	$	305,122,000
In one to two years		92,042,000		145,775,000
In two to three years		34,204,000		71,988,000
In three to four years		35,523,000		37,527,000
In four to five years		49,389,000		29,859,000
Total certificates of deposit	$	569,417,000	$	590,271,000

Contractual Maturities of Certificates of Deposits of More than Specified Amount [Table Text Block]

	2016		2015
Up to three months	$	101,444,000	$	73,783,000
Three months to six months		87,277,000		50,375,000
Six months to twelve months		79,656,000		91,786,000
Over twelve months		154,871,000		218,523,000
Total certificates of deposit	$	423,248,000	$	434,467,000