REGULATORY CAPITAL REQUIREMENTS (Tables)

12 Months Ended

Dec. 31, 2018

Regulatory Capital Requirements [Abstract]

Schedule of the Regulatory Capital Ratios and Minimum Regulatory Requirements

The following table shows the regulatory capital ratios of the Company and the Banks and the minimum regulatory requirements (dollars in thousands):

	Actual				Minimum for Capital Adequacy Purposes				Minimum to be Categorized as “Well-Capitalized” Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2018:
The Company—consolidated:
Total capital to risk-weighted assets	$	1,302,239	13.12	%	$	794,072	8.00	%	$	992,590	10.00	%
Tier 1 capital to risk-weighted assets	1,203,155		12.12		595,554		6.00		595,554		6.00
Tier 1 common equity to risk-weighted assets	1,067,155		10.75		446,665		4.50		n/a		n/a
Tier 1 capital to average leverage assets	1,203,155		10.98		438,379		4.00		n/a		n/a
Banner Bank:
Total capital to risk- weighted assets	1,217,173		12.50		778,766		8.00		973,457		10.00
Tier 1 capital to risk- weighted assets	1,120,523		11.51		584,074		6.00		778,766		8.00
Tier 1 common equity to risk-weighted assets	1,120,523		11.51		438,056		4.50		632,747		6.50
Tier 1 capital to average leverage assets	1,120,523		10.50		426,799		4.00		533,498		5.00
Islanders Bank:
Total capital to risk- weighted assets	34,567		18.26		15,142		8.00		18,928		10.00
Tier 1 capital to risk- weighted assets	32,200		17.01		11,357		6.00		15,142		8.00
Tier 1 common equity to risk-weighted assets	32,200		17.01		8,518		4.50		12,303		6.50
Tier 1 capital to average leverage assets	32,200		11.16		11,543		4.00		14,428		5.00
December 31, 2017:
The Company—consolidated:
Total capital to risk-weighted assets	$	1,214,631	13.81	%	$	703,508	8.00	%	$	879,385	10.00	%
Tier 1 capital to risk-weighted assets	1,123,154		12.77		527,631		6.00		527,631		6.00
Tier 1 common equity to risk-weighted assets	994,080		11.30		395,723		4.50		n/a		n/a
Tier 1 capital to average leverage assets	1,123,154		11.34		396,313		4.00		n/a		n/a
Banner Bank:
Total capital to risk- weighted assets	1,102,195		12.83		687,266		8.00		859,083		10.00
Tier 1 capital to risk- weighted assets	1,013,079		11.79		515,450		6.00		687,266		8.00
Tier 1 common equity to risk-weighted assets	1,013,079		11.79		386,587		4.50		558,404		6.50
Tier 1 capital to average leverage assets	1,013,079		10.53		384,920		4.00		481,150		5.00
Islanders Bank:
Total capital to risk- weighted assets	32,122		16.39		15,681		8.00		19,602		10.00
Tier 1 capital to risk- weighted assets	29,761		15.18		11,761		6.00		15,681		8.00
Tier 1 common equity to risk-weighted assets	29,761		15.18		8,821		4.50		12,741		6.50
Tier 1 capital to average leverage assets	29,761		10.65		11,183		4.00		13,979		5.00