Note 14 - Regulatory Capital (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

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

	March 31, 2017					December 31, 2016
	Amount		Percent of Assets			Amount		Percent of Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	616,017		9.98	%	$	607,033		10.12	%
Requirement to be well capitalized		308,535		5.00			299,848		5.00
Excess		307,482		4.98			307,185		5.12
Common Equity Tier I risk-based capital:
Capital level	$	616,017		13.80	%	$	607,033		14.12	%
Requirement to be well capitalized		290,046		6.50			279,443		6.50
Excess		325,971		7.30			327,590		7.62
Tier I risk-based capital:
Capital level	$	616,017		13.80	%	$	607,033		14.12	%
Requirement to be well capitalized		356,980		8.00			343,930		8.00
Excess		259,037		5.80			263,103		6.12
Total risk-based capital:
Capital level	$	638,228		14.30	%	$	629,262		14.64	%
Requirement to be well capitalized		446,225		10.00			429,913		10.00
Excess		192,003		4.30			199,349		4.64

	March 31, 2017					December 31, 2016
	Amount		Percent of Assets			Amount		Percent of Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	550,055		8.92	%	$	539,228		9.00	%
Requirement to be well capitalized		308,284		5.00			299,654		5.00
Excess		241,771		3.92			239,574		4.00
Common Equity Tier I risk-based capital:
Capital level	$	516,706		11.59	%	$	506,432		11.79	%
Requirement to be well capitalized		289,733		6.50			279,121		6.50
Excess		226,973		5.09			227,311		5.29
Tier I risk-based capital:
Capital level	$	550,055		12.34	%	$	539,228		12.56	%
Requirement to be well capitalized		356,594		8.00			343,534		8.00
Excess		193,461		4.34			195,694		4.56
Total risk-based capital:
Capital level	$	647,266		14.52	%	$	636,457		14.82	%
Requirement to be well capitalized		445,743		10.00			429,417		10.00
Excess		201,523		4.52			207,040		4.82