REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES (Tables)

9 Months Ended

Sep. 30, 2016

Commitments And Contingencies Disclosure [Abstract]

Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Text Block]

The Corporation's and its banking subsidiary's regulatory capital positions as of September 30, 2016 and December 31, 2015 were as follows:
	Regulatory Requirements
	Actual			For Capital Adequacy Purposes			To be Well-Capitalized-Regular Thresholds
	Amount		Ratio	Amount		Ratio	Amount		Ratio
	(Dollars in thousands)
As of September 30, 2016
Total Capital (to
Risk-Weighted Assets)
First BanCorp.	$	1,892,493	21.27%	$	711,754	8.0%		N/A	N/A
FirstBank	$	1,843,533	20.73%	$	711,460	8.0%	$	889,325	10.0%
Common Equity Tier 1 Capital
(to Risk-Weighted Assets)
First BanCorp.	$	1,569,482	17.64%	$	400,362	4.5%		N/A	N/A
FirstBank	$	1,496,670	16.83%	$	400,196	4.5%	$	578,061	6.5%
Tier I Capital (to
Risk-Weighted Assets)
First BanCorp.	$	1,569,482	17.64%	$	533,816	6.0%		N/A	N/A
FirstBank	$	1,730,264	19.46%	$	533,595	6.0%	$	711,460	8.0%
Leverage ratio
First BanCorp.	$	1,569,482	13.04%	$	481,357	4.0%		N/A	N/A
FirstBank	$	1,730,264	14.40%	$	480,751	4.0%	$	600,939	5.0%
As of December 31, 2015
Total Capital (to
Risk-Weighted Assets)
First BanCorp.	$	1,828,559	20.01%	$	731,164	8.0%		N/A	N/A
FirstBank	$	1,802,711	19.73%	$	730,824	8.0%	$	913,530	10.0%
Common Equity Tier 1 Capital
(to Risk-Weighted Assets)
First BanCorp.	$	1,546,678	16.92%	$	411,280	4.5%		N/A	N/A
FirstBank	$	1,493,478	16.35%	$	411,088	4.5%	$	593,794	6.5%
Tier I Capital (to
Risk-Weighted Assets)
First BanCorp.	$	1,546,678	16.92%	$	548,373	6.0%		N/A	N/A
FirstBank	$	1,685,656	18.45%	$	548,118	6.0%	$	730,824	8.0%
Leverage ratio
First BanCorp.	$	1,546,678	12.22%	$	506,322	4.0%		N/A	N/A
FirstBank	$	1,685,656	13.33%	$	505,648	4.0%	$	632,060	5.0%