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Investment Securities (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Investments Guaranteed by US Treasury and Sponsored Agencies in Unrealized Loss on Position | $ 894,200 |  |  |
Investments Guaranteed by Puerto Rico Government and its Political Subdivisions in Unrealized Loss On Position | $ 4,700 |  |  |
Investments Guaranteed By Us Treasury And Sponsored Agencies in Unrealized Loss Position Percentage To Total Investment in Unrealized Loss Position | 99.50% |  |  |
Investments Guaranteed By Puerto Rico Government and Its Political Subdivisions in Unrealized Loss Position Percentage To Total Investment in Unrealized Loss Position | 0.50% |  |  |
Maximum GovernmentBond Probability Of Default | 7.70% |  |  |
Money market investments | $ 5,606 | $ 4,699 |  |
Securitized GNMA pools, amortized cost | $ 112,200 |  |  |
Securitized GNMA pool, yield | 2.89% |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-for-sale securities, Book Value | $ 288,276 | 101,259 | $ 210,152 |
Gain (Loss) on Sale of Securities, Net | 12,207 | 2,572 | 4,366 |
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held | 0 | 1,490 | 0 | $ 0
Investments Guaranteed By Local Government And Its Political Subdivisions In Unrealized Loss On Position with Cumulative Default Probability Fair Value | $ 4,100 |  |  |
Investments Guaranteed By Local Government And Its Political Subdivisions In Unrealized Loss Position Fair Vaue Percentage to Total Cost | 87.00% |  |  |
Government Investment with Default Probability Payment Received | $ 2,000 |  |  |
Collateralized Mortgage Backed Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-for-sale securities, Book Value | 277,181 | 101,259 | 210,152 |
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-for-sale securities, Book Value | 277,181 | 37,736 | 110,792 |
Collateralized Mortgage Backed Securities [Member] | Government National Mortgage Association Certificates and Obligations (GNMA) [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-for-sale securities, Book Value |  | $ 63,523 | $ 99,360 |
Securities Investment [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-for-sale securities, Book Value | 11,095 |  |  |
Securities Investment [Member] | Obligations of Puerto Rico Government and Public Instrumentalities |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Available-for-sale securities, Book Value | $ 11,095 |  |  |

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- Definition This item represents the book value at the sale of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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