Regulatory Capital (Tables)

12 Months Ended

Dec. 31, 2018

Banking and Thrift [Abstract]

Public Utilities General Disclosures

The following table presents the Company's and the Bank's actual capital amounts and ratios as of December 31, 2018 and 2017 as compared to the Federal Reserve Bank minimum capital adequacy requirements and the Federal Reserve Bank requirements for classification as a well-capitalized institution:

(10)    Regulatory Capital (continued)

	Actual				Minimum capital adequacy requirements				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
Company	(In thousands, except ratio data)
At December 31, 2018:
Total capital (to risk-weighted assets)	$	1,094,062	23.45	%	$	373,276	8.00	%	$	460,763	9.88	%	N/A		N/A
Tier 1 capital (to risk-weighted assets)	1,035,477		22.19		279,957		6.00		367,444		7.88		N/A		N/A
Common equity tier 1 capital (to risk-weighted assets)	1,035,477		22.19		209,968		4.50		297,455		6.38		N/A		N/A
Tier 1 capital (to adjusted total assets)	1,035,477		15.75		263,037		4.00		263,037		4.00		N/A		N/A
At December 31, 2017:
Total capital (to risk-weighted assets)	$	631,952	15.01	%	$	336,730	8.00	%	$	389,244	9.25	%	N/A		N/A
Tier 1 capital (to risk-weighted assets)	579,080		13.76		252,547		6.00		305,161		7.25		N/A		N/A
Common equity tier 1 capital (to risk-weighted assets)	528,080		12.55		189,410		4.50		242,025		5.75		N/A		N/A
Tier 1 capital (to adjusted total assets)	579,080		10.54		219,833		4.00		219,833		4.00		N/A		N/A
Bank
At December 31, 2018:
Total capital (to risk-weighted assets)	$	886,728	19.04	%	$	372,550	8.00	%	$	459,866	9.88	%	$	465,687	10.00	%
Tier 1 capital (to risk-weighted assets)	828,257		17.79		279,412		6.00		366,729		7.88		372,550		8.00
Common equity tier 1 capital (to risk-weighted assets)	828,257		17.79		209,559		4.50		296,875		6.38		302,697		6.50
Tier 1 capital (to adjusted total assets)	828,257		12.60		263,025		4.00		263,025		4.00		328,781		5.00
At December 31, 2017:
Total capital (to risk-weighted assets)	$	625,336	14.90	%	$	335,736	8.00	%	$	388,196	9.25	%	$	419,671	10.00	%
Tier 1 capital (to risk-weighted assets)	572,617		13.64		251,802		6.00		304,262		7.25		335,736		8.00
Common equity tier 1 capital (to risk-weighted assets)	572,617		13.64		188,852		4.50		241,311		5.75		272,786		6.50
Tier 1 capital (to adjusted total assets)	572,617		10.44		221,257		4.00		221,257		4.00		276,571		5.00