Commitments and Contingencies Disclosure [Line Items]

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- Definition

Concentration of Risk Credit Facilities with the Puerto Rico government that is outstanding.

+ References

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- Definition

Total exposure on financial instruments with the PR government

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- Definition

The Corporations exposure to municipal loans and securities was concentrated in the municipalities of San Juan, Guaynabo, Carolina and Bayamon.

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- Definition

Amount before allowance of consumer mortgage held and guaranteed by the Puerto Rico Housing Authority.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-URI http://asc.fasb.org/extlink&oid=82897076&loc=SL6284393-111563

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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Note Commitments and contingencies (Commitments) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jul. 02, 2018	Mar. 31, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Line Items]
Contingent consideration						$ 171,000	$ 165,000
Other-than-temporary impairment losses on debt securities	$ 0	$ 8,299	$ 0	$ 8,299
Exposure Municipal Loans And Securities	74.00%		74.00%
PR Government Direct Exposure
Commitments and Contingencies Disclosure [Line Items]
Concentration Risk Credit Risk Financial Instrument Maximum Exposure 1	$ 481,306		$ 481,306				483,580
PR Government Direct Exposure \| From Municipalities
Commitments and Contingencies Disclosure [Line Items]
Concentration Risk Credit Risk Financial Instrument Maximum Exposure 1	481,239		481,239
PR Government Direct Exposure \| From Municipalities \| Principal payment
Commitments and Contingencies Disclosure [Line Items]
Concentration Risk Credit Risk Financial Instrument Maximum Exposure 1					$ (23,000)
PR Government Indirect Exposure
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	378,000		378,000				386,000
PR Government Indirect Exposure \| PR Housing Bonds backed by second mortgage loans
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	44,000		44,000				44,000
PR Government Indirect Exposure \| Commercial real estate
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	24,000		24,000				25,000
PR Government Indirect Exposure \| Pass Through securities that have been economically defeased and refunded
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	7,000		7,000				7,000
Outstanding Balance \| PR Government Direct Exposure
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	481,306		481,306				483,580
Outstanding Balance \| PR Government Direct Exposure \| From Municipalities
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	481,239		481,239
Outstanding Balance \| PR Government Indirect Exposure
Commitments and Contingencies Disclosure [Line Items]
Loans and Leases Receivable, Consumer, Mortgage with PRHA	303,000		303,000				310,000
Commitments To Extend Credit
Commitments and Contingencies Disclosure [Line Items]
Reserve of potential losses associated with unfunded loan commitments	9,000		9,000				10,000
Loans \| Outstanding Balance \| PR Government Direct Exposure
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	434,434		434,434				434,493
Loans \| Outstanding Balance \| PR Government Direct Exposure \| From Municipalities
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	434,434		434,434
Securities Investment \| Outstanding Balance \| PR Government Direct Exposure
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	46,872		46,872				$ 49,045
Securities Investment \| Outstanding Balance \| PR Government Direct Exposure \| From Municipalities
Commitments and Contingencies Disclosure [Line Items]
Concentration Of Risk Credit Facilities	$ 46,805		$ 46,805