Note 15 - Regulatory Capital (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

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

	September 30, 2019					December 31, 2018
			Percent of					Percent of
	Amount		Assets			Amount		Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	673,084		9.66	%	$	660,782		9.85	%
Requirement to be well capitalized		348,415		5.00			335,512		5.00
Excess		324,669		4.66			325,270		4.85
Common Equity Tier I risk-based capital:
Capital level	$	673,084		12.79	%	$	660,782		13.28	%
Requirement to be well capitalized		342,103		6.50			323,386		6.50
Excess		330,981		6.29			337,396		6.78
Tier 1 risk-based capital:
Capital level	$	673,084		12.79	%	$	660,782		13.28	%
Requirement to be well capitalized		421,049		8.00			398,014		8.00
Excess		252,035		4.79			262,768		5.28
Total risk-based capital:
Capital level	$	695,120		13.21	%	$	681,727		13.70	%
Requirement to be well capitalized		526,312		10.00			497,517		10.00
Excess		168,808		3.21			184,210		3.70

	September 30, 2019					December 31, 2018
			Percent of					Percent of
	Amount		Assets			Amount		Assets
	(Dollars in thousands)
Tier I (leverage) capital:
Capital level	$	606,844		8.71	%	$	586,582		8.74	%
Requirement to be well capitalized		348,355		5.00			335,616		5.00
Excess		258,489		3.71			250,966		3.74
Common Equity Tier I risk-based capital:
Capital level	$	564,466		10.73	%	$	546,230		10.98	%
Requirement to be well capitalized		342,078		6.50			323,382		6.50
Excess		222,388		4.23			222,848		4.48
Tier 1 risk-based capital:
Capital level	$	606,844		11.53	%	$	586,582		11.79	%
Requirement to be well capitalized		421,019		8.00			398,008		8.00
Excess		185,825		3.53			188,574		3.79
Total risk-based capital:
Capital level	$	703,879		13.37	%	$	682,527		13.72	%
Requirement to be well capitalized		526,274		10.00			497,511		10.00
Excess		177,605		3.37			185,016		3.72