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Investment Securities (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Investments Guaranteed by US Treasury and Sponsored Agencies in Unrealized Loss on Position | $ 1,200 |  | $ 1,200 |  |
Investments Guaranteed by Puerto Rico Government and its Political Subdivisions in Unrealized Loss On Position | 2,500 |  | 2,500 |  |
Money market investments | 6,991 |  | 6,991 |  | $ 7,021
Securitized GNMA pools retained, amortized cost | $ 37,600 | $ 49,800 | $ 37,600 | $ 49,800 |
Securitized GNMA pool retained, yield | 3.45% | 3.15% | 3.45% | 3.15% |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities sold , Book Value |  |  |  | $ 205,312 |
Gain (Loss) on Sale of Securities, Net | $ 0 | $ 6,891 | $ 0 | 6,891 |
Investments Guaranteed By Local Government And Its Political Subdivisions In Unrealized Loss On Position with Cumulative Default Probability Fair Value | $ 2,500 |  | $ 2,500 |  |
Collateralized Mortgage Backed Securities [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities sold , Book Value |  |  |  | 166,015 |
Collateralized Mortgage Backed Securities [Member] | FNMA and FHLMC [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities sold , Book Value |  |  |  | 102,311 |
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 sold , Book Value |  |  |  | 63,704 |
Collateralized Mortgage Backed Securities [Member] | Obligations of Puerto Rico Government and Public Instrumentalities |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities sold , Book Value |  |  |  | 39,297 |
US Treasury Securities |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities sold , Book Value |  |  |  | $ 39,297 |

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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 Investments Guaranteed By Puerto Rico Government And Its Political Subdivisions In Unrealized Loss On Position with Cumulative Default Probability Fair Value + References No definition available. + Details
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- Definition Investments in Unrealized Loss on Positions Guaranteed by Puerto Rico Government and its political subdivisions subject to credit risk and decline on market value due to puerto Rico Government market conditions. + References No definition available. + Details
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- Definition Investments in unrealized loss on positions guaranteed by US Treasury and sponsored agencies which are not subject to credit risk due to market conditions. + References No definition available. + Details
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