Note 22 - Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

	Company					Bank								To Be Well Capitalized Under
	Actual					Actual					Minimum Required For			Prompt Corrective Action
(dollars in thousands)	Amount		Ratio			Amount		Ratio			Capital Adequacy Purposes			Regulations *
As of December 31, 2016
CET1 capital (to risk weighted aseets)	$	737,512		10.80	%	$	854,226		12.55	%		5.125	%		6.5	%
Total capital (to risk weighted assets)		1,016,712		14.89	%		913,100		13.41	%		8.625	%		10.0	%
Tier 1 capital (to risk weighted assets)		737,512		10.80	%		854,226		12.55	%		6.625	%		8.0	%
Tier 1 capital (to average assets)		737,512		10.72	%		854,226		12.44	%		5.000	%		5.0	%

As of December 31, 2015
CET1 capital (to risk weighted assets)	$	632,408	10.68	%	$	620,879	10.52	%	4.50	%	6.5	%
Total capital (to risk weighted assets)		755,212	12.75	%		673,442	11.41	%	8.00	%	10.0	%
Tier 1 capital (to risk weighted assets)		632,408	10.68	%		620,879	10.52	%	6.00	%	8.0	%
Tier 1 capital (to average assets)		632,408	10.90	%		620,879	10.74	%	4.00	%	5.0	%