Stockholders' Equity and Regulatory Requirements (Tables)

12 Months Ended

Dec. 31, 2021

Stockholders' Equity Note [Abstract]

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

The following is a summary of the Bank’s and the Parent Corporation’s actual capital amounts and ratios as of December 31, 2021 and 2020, compared to the FRB and FDIC minimum capital adequacy requirements and the FDIC requirements for classification as a well-capitalized institution.

					Minimum Capital Adequacy				For Classification Under Corrective Action Plan as Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
The Bank					(dollars in thousands)
December 31, 2021
Leverage (Tier 1) capital	$	891,730		11.43%	$	312,166		4.00%	$	390,207		5.00%
Risk-Based Capital:
CET 1	$	891,730		11.96%	$	335,641		4.50%	$	484,815		6.50%
Tier 1		891,730		11.96%		447,522		6.00%		596,696		8.00%
Total		1,002,753		13.44%		596,696		8.00%		745,869		10.00%

December 31, 2020
Leverage (Tier 1) capital	$	776,430		10.64%	$	291,958		4.00%	$	364,947		5.00%
Risk-Based Capital:
CET 1	$	776,430		12.24%	$	285,473		4.50%	$	412,349		6.50%
Tier 1		776,430		12.24%		380,630		6.00%		507,507		8.00%
Total		887,906		14.00%		507,507		8.00%		634,384		10.00%

					Minimum Capital Adequacy				For Classification as Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount	Ratio
The Company					(dollars in thousands)
December 31, 2021
Leverage (Tier 1) capital	$	909,577		11.65%	$	312,194		4.00%	N/A	N/A
Risk-Based Capital:
CET 1	$	793,495		10.64%	$	335,648		4.50%	N/A	N/A
Tier 1		909,577		12.19%		447,531		6.00%	N/A	N/A
Total		1,138,350		15.26%		596,708		8.00%	N/A	N/A

December 31, 2020
Leverage (Tier 1) capital	$	694,895		9.51%	$	292,349		4.00%	N/A	N/A
Risk-Based Capital:
CET 1	$	689,740		10.79%	$	287,746		4.50%	N/A	N/A
Tier 1		694,895		10.87%		383,661		6.00%	N/A	N/A
Total		964,121		15.08%		511,548		8.00%	N/A	N/A