Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Actual Capital Amounts and Ratios

The following table shows the Company’s actual capital amounts and ratios as of December 31, 2019 and 2018, compared to the FRB minimum capital adequacy requirements and the FRB requirements for classification as a well-capitalized institution (dollars in thousands).

	Actual capital				FRB minimum capital adequacy requirements				FRB minimum capital adequacy requirements with capital conservation buffer				To be well-capitalized under prompt corrective action provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2019
Tier 1 leverage capital	$	973,214	10.34	%	$	376,484	4.00	%	$	376,484	4.00	%	$	470,605	5.00	%
Common equity Tier 1 risk-based capital	973,214		12.74		343,756		4.50		534,732		7.00		496,537		6.50
Tier 1 risk-based capital	973,214		12.74		458,342		6.00		649,317		8.50		611,122		8.00
Total risk-based capital	1,028,879		13.47		611,122		8.00		802,098		10.50		763,903		10.00

	Actual capital				FRB minimum capital adequacy requirements				FRB minimum capital adequacy requirements with capital conservation buffer				To be well-capitalized under prompt corrective action provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2018
Tier 1 leverage capital	$	953,768	10.24	%	$	372,458	4.00	%	$	372,458	4.00	%	$	465,573	5.00	%
Common equity Tier 1 risk-based capital	953,768		12.54		342,277		4.50		484,893		6.38		494,400		6.50
Tier 1 risk-based capital	953,768		12.54		456,370		6.00		598,985		7.88		608,493		8.00
Total risk-based capital	1,009,475		13.27		608,493		8.00		751,108		9.88		760,616		10.00

FDIC Minimum Capital Adequacy Requirements

The following table shows the Bank’s actual capital amounts and ratios as of December 31, 2019 and 2018, compared to the FDIC minimum capital adequacy requirements and the FDIC requirements for classification as a well-capitalized institution (dollars in thousands).

	Actual capital				FDIC minimum capital adequacy requirements				FDIC minimum capital adequacy requirements with capital conservation buffer				To be well-capitalized under prompt corrective action provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2019
Tier 1 leverage capital	$	923,471	9.81	%	$	376,449	4.00	%	$	376,449	4.00	%	$	470,562	5.00	%
Common equity Tier 1 risk-based capital	923,471		12.09		343,716		4.50		534,670		7.00		496,479		6.50
Tier 1 risk-based capital	923,471		12.09		458,288		6.00		649,242		8.50		611,051		8.00
Total risk-based capital	979,136		12.82		611,051		8.00		802,004		10.50		763,814		10.00

	Actual capital				FDIC minimum capital adequacy requirements				FRB minimum capital adequacy requirements with capital conservation buffer				To be well-capitalized under prompt corrective action provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2018
Tier 1 leverage capital	$	917,659	9.86	%	$	372,443	4.00	%	$	372,443	4.00	%	$	465,553	5.00	%
Common equity Tier 1 risk-based capital	917,659		12.06		342,279		4.50		484,895		6.38		494,403		6.50
Tier 1 risk-based capital	917,659		12.06		456,372		6.00		598,988		7.88		608,496		8.00
Total risk-based capital	973,366		12.80		608,496		8.00		751,113		9.88		760,620		10.00