Note 15 - Regulatory Capital (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

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

	June 30, 2019					December 31, 2018
			Percent of					Percent of
	Amount		Assets			Amount		Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	667,882		9.69	%	$	660,782		9.85	%
Requirement to be well capitalized		344,642		5.00			335,512		5.00
Excess		323,240		4.69			325,270		4.85
Common Equity Tier I risk-based capital:
Capital level	$	667,882		12.66	%	$	660,782		13.28	%
Requirement to be well capitalized		342,872		6.50			323,386		6.50
Excess		325,010		6.16			337,396		6.78
Tier 1 risk-based capital:
Capital level	$	667,882		12.66	%	$	660,782		13.28	%
Requirement to be well capitalized		421,997		8.00			398,014		8.00
Excess		245,885		4.66			262,768		5.28
Total risk-based capital:
Capital level	$	689,392		13.07	%	$	681,727		13.70	%
Requirement to be well capitalized		527,496		10.00			497,517		10.00
Excess		161,896		3.07			184,210		3.70

	June 30, 2019					December 31, 2018
			Percent of					Percent of
	Amount		Assets			Amount		Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	600,730		8.72	%	$	586,582		8.74	%
Requirement to be well capitalized		344,637		5.00			335,616		5.00
Excess		256,093		3.72			250,966		3.74
Common Equity Tier I risk-based capital:
Capital level	$	558,848		10.60	%	$	546,230		10.98	%
Requirement to be well capitalized		342,840		6.50			323,382		6.50
Excess		216,008		4.10			222,848		4.48
Tier 1 risk-based capital:
Capital level	$	600,730		11.39	%	$	586,582		11.79	%
Requirement to be well capitalized		421,957		8.00			398,008		8.00
Excess		178,773		3.39			188,574		3.79
Total risk-based capital:
Capital level	$	697,240		13.22	%	$	682,527		13.72	%
Requirement to be well capitalized		527,446		10.00			497,511		10.00
Excess		169,794		3.22			185,016		3.72