Note 15 - Regulatory Capital (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

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

	March 31, 2016					December 31, 2015
	Amount		Percent of Assets			Amount		Percent of Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	498,308		8.65	%	$	494,690		8.89	%
Requirement to be well capitalized		288,017		5.00			278,175		5.00
Excess		210,291		3.65			216,515		3.89
Common Equity Tier I risk-based capital:
Capital level	$	498,308		12.51	%	$	494,690		12.62
Requirement to be well capitalized		258,947		6.50			254,768		6.50
Excess		239,361		6.01			239,922		6.12
Tier 1 risk-based capital:
Capital level	$	498,308		12.51	%	$	494,690		12.62	%
Requirement to be well capitalized		318,703		8.00			313,560		8.00
Excess		179,605		4.51			181,130		4.62
Total risk-based capital:
Capital level	$	520,300		13.06	%	$	516,226		13.17	%
Requirement to be well capitalized		398,379		10.00			391,950		10.00
Excess		121,921		3.06			124,276		3.17

	March 31, 2016					December 31, 2015
	Amount		Percent of Assets			Amount		Percent of Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	497,698		8.65	%	$	490,919		8.84	%
Requirement to be well capitalized		287,543		5.00			277,611		5.00
Excess		210,155		3.65			213,308		3.84
Common Equity Tier I risk-based capital:
Capital level	$	470,685		11.84	%	$	462,883		11.83
Requirement to be well capitalized		258,443		6.50			254,335		6.50
Excess		212,242		5.34			208,548		5.33
Tier 1 risk-based capital:
Capital level	$	497,698		12.52	%	$	490,919		12.55	%
Requirement to be well capitalized		318,084		8.00			313,028		8.00
Excess		179,614		4.52			177,891		4.55
Total risk-based capital:
Capital level	$	519,691		13.07	%	$	512,454		13.10	%
Requirement to be well capitalized		397,605		10.00			391,285		10.00
Excess		122,086		3.07			121,169		3.10