Note 15 - Regulatory Capital (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

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

	June 30, 2016					December 31, 2015
	Amount		Percent of Assets			Amount		Percent of Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	522,961		8.89	%	$	494,690		8.89	%
Requirement to be well capitalized		294,004		5.00			278,175		5.00
Excess		228,957		3.89			216,515		3.89
Common Equity Tier I risk-based capital:
Capital level	$	522,961		12.20	%	$	494,690		12.62
Requirement to be well capitalized		278,653		6.50			254,768		6.50
Excess		244,308		5.70			239,922		6.12
Tier 1 risk-based capital:
Capital level	$	522,961		12.20	%	$	494,690		12.62	%
Requirement to be well capitalized		342,958		8.00			313,560		8.00
Excess		180,003		4.20			181,130		4.62
Total risk-based capital:
Capital level	$	545,159		12.72	%	$	516,226		13.17	%
Requirement to be well capitalized		428,697		10.00			391,950		10.00
Excess		116,462		2.72			124,276		3.17

	June 30, 2016					December 31, 2015
	Amount		Percent of Assets			Amount		Percent of Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	516,551		8.80	%	$	490,919		8.84	%
Requirement to be well capitalized		293,532		5.00			277,611		5.00
Excess		223,019		3.80			213,308		3.84
Common Equity Tier I risk-based capital:
Capital level	$	490,015		11.45	%	$	462,883		11.83
Requirement to be well capitalized		278,140		6.50			254,335		6.50
Excess		211,875		4.95			208,548		5.33
Tier 1 risk-based capital:
Capital level	$	516,551		12.07	%	$	490,919		12.55	%
Requirement to be well capitalized		342,326		8.00			313,028		8.00
Excess		174,225		4.07			177,891		4.55
Total risk-based capital:
Capital level	$	538,749		12.59	%	$	512,454		13.10	%
Requirement to be well capitalized		427,907		10.00			391,285		10.00
Excess		110,842		2.59			121,169		3.10