REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Mar. 31, 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 March 31, 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 March 31, 2016
Total Capital (to
Risk-Weighted Assets)
First BanCorp.		$	1,842,251	20.17%	$	730,576	8.0%		N/A	N/A
FirstBank		$	1,823,238	19.97%	$	730,277	8.0%	$	912,846	10.0%
Common Equity Tier 1 Capital
(to Risk-Weighted Assets)
First BanCorp.		$	1,516,041	16.60%	$	410,949	4.5%		N/A	N/A
FirstBank		$	1,474,364	16.15%	$	410,781	4.5%	$	593,350	6.5%
Tier I Capital (to
Risk-Weighted Assets)
First BanCorp.		$	1,516,041	16.60%	$	547,932	6.0%		N/A	N/A
FirstBank		$	1,706,771	18.70%	$	547,708	6.0%	$	730,277	8.0%
Leverage ratio
First BanCorp.		$	1,516,041	12.20%	$	497,157	4.0%		N/A	N/A
FirstBank		$	1,706,771	13.75%	$	496,530	4.0%	$	620,662	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%