Stockholders' Equity and Regulatory Requirements (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016 and 2015, 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, 2016
Leverage (Tier 1) capital	$	434,067		10.34%	$	167,996		4.00%	$	209,995		5.00%
Risk-Based Capital:
CET 1	$	434,067		10.98%	$	177,944		4.50%	$	257,030		6.50%
Tier 1		434,067		10.98%		237,258		6.00%		316,344		8.00%
Total		459,811		11.63%		316,344		8.00%		395,430		10.00%
December 31, 2015
Leverage (Tier 1) capital	$	372,979		9.96%	$	149,724		4.00%	$	187,154		5.00%
Risk-Based Capital:
	$	372,979		10.55%	$	159,028		4.50%	$	229,707		6.50%
Tier 1		372,979		10.55%		212,037		6.00%		282,716		8.00%
Total		399,551		11.31%		282,716		8.00%		353,395		10.00%

					Minimum Capital Adequacy				For Classification as Well Capitalized
	Amount		Ratio		Amount		Ratio		Amount		Ratio
The Company	(dollars in thousands)
December 31, 2016
Leverage (Tier 1) capital	$	390,205		9.29%	$	168,048		4.00%		N/A		N/A
Risk-Based Capital:
CET 1	$	385,050		9.74%	$	177,967		4.50%		N/A		N/A
Tier 1		390,205		9.87%		237,289		6.00%		N/A		N/A
Total		465,949		11.78%		316,386		8.00%		N/A		N/A
December 31, 2015
Leverage (Tier 1) capital	$	339,544		9.07%	$	149,776		4.00%		N/A		N/A
Risk-Based Capital:
	$	323,139		9.14%	$	159,078		4.50%		N/A		N/A
Tier 1		339,544		9.61%		212,104		6.00%		N/A		N/A
Total		416,116		11.77%		282,805		8.00%		N/A		N/A