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Investments in an Unrealized Loss Position - OTTI (Details) (USD $)
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12 Months Ended | 3 Months Ended | 12 Months Ended | ||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Jun. 30, 2012
Puerto Rico Non Agency Collateralized Mortgage Obligations [Member]
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Dec. 31, 2012
Investments for which Other than Temporary Impairments Were Recognized [Member]
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Dec. 31, 2012
Investments for which Other than Temporary Impairments Were Recognized [Member]
Puerto Rico Non Agency Collateralized Mortgage Obligations [Member]
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Dec. 31, 2012
Investments for which Other than Temporary Impairments Were Recognized [Member]
Other Debt Obligations [Member]
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| Schedule Of Available For Sale Securities With Otti Recognized [Line Items] | |||||||
| Amortized Cost (after credit related OTTI) | $ 0 | $ 0 | $ 0 | ||||
| Unrealized Losses | 4,792,000 | 578,000 | 0 | 0 | 0 | ||
| Fair Value | 0 | 0 | 0 | ||||
| Net OTTI losses | 0 | 6,396,000 | 4,290,000 | 6,396,000 | 4,881,000 | 1,515,000 | |
| OTTI Related to Non-Credit Loss | 0 | 0 | 4,195,000 | 0 | 0 | 0 | |
| Loss on Sale of Investments | 87,000 | ||||||
| Net credit related OTTI losses | 0 | 6,396,000 | 8,485,000 | 6,396,000 | 4,881,000 | 1,515,000 | |
| OTTI, Credit Losses Recognized in Earnings [Roll Forward] | |||||||
| Balance at beginning of period | 0 | 7,106,000 | 2,816,000 | ||||
| Credit losses for which OTTI was not previously recognized | 0 | 1,515,000 | 0 | ||||
| Additional OTTI credit losses for which an other-than-temporary charge was previously recognized | 0 | 4,881,000 | 4,290,000 | ||||
| OTTI on investment securities sold | 0 | (13,502,000) | 0 | ||||
| Balance at end of period | $ 0 | $ 0 | $ 7,106,000 | ||||