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Loans (Accretable yield and non-accretable discount activity) (Details) - Acquired under ASC 310-30 Non-Covered Loans [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | $ 308,913 | $ 354,701 | $ 361,688
Accretion Accretable | 44,639 | 58,957 | 75,637
Change in expected cash flow | 9,269 | 22,565 | 15,267
Transfer from (to) non-accretable discount | (4,033) | (9,396) | 53,383
Balance at end of period | 269,510 | 308,913 | 354,701
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non Accretable Discount Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 352,431 | 363,107 | 434,190
Change in actual and expected losses | (11,041) | (20,072) | (17,700)
Transfer (to) from accretable yield | 4,033 | 9,396 | (53,383)
Balance at end of period | 345,423 | 352,431 | 363,107
Mortgage Loan [Member] |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 258,498 | 292,115 | 268,794
Accretion Accretable | 27,248 | 30,205 | 32,834
Change in expected cash flow | 0 | 2 | (1)
Transfer from (to) non-accretable discount | 949 | (3,414) | 56,156
Balance at end of period | 232,199 | 258,498 | 292,115
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non Accretable Discount Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 299,501 | 305,615 | 374,772
Change in actual and expected losses | (6,665) | (9,528) | (13,001)
Transfer (to) from accretable yield | (949) | 3,414 | (56,156)
Balance at end of period | 291,887 | 299,501 | 305,615
Commercial Loan [Member] |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 46,764 | 50,366 | 65,026
Accretion Accretable | 14,160 | 20,572 | 26,254
Change in expected cash flow | 7,895 | 22,250 | 14,259
Transfer from (to) non-accretable discount | (3,991) | (5,280) | (2,665)
Balance at end of period | 36,508 | 46,764 | 50,366
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non Accretable Discount Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 10,596 | 16,965 | 18,545
Change in actual and expected losses | (4,241) | (11,649) | (4,245)
Transfer (to) from accretable yield | 3,991 | 5,280 | 2,665
Balance at end of period | 10,346 | 10,596 | 16,965
Auto Loan [Member] |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 2,766 | 8,538 | 21,578
Accretion Accretable | 2,360 | 6,339 | 13,567
Change in expected cash flow | 890 | 170 | 1,251
Transfer from (to) non-accretable discount | (1,053) | 397 | (724)
Balance at end of period | 243 | 2,766 | 8,538
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non Accretable Discount Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 23,050 | 22,407 | 22,039
Change in actual and expected losses | 142 | 1,040 | (356)
Transfer (to) from accretable yield | 1,053 | (397) | 724
Balance at end of period | 24,245 | 23,050 | 22,407
Consumer Loan [Member] |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 885 | 3,682 | 6,290
Accretion Accretable | 871 | 1,841 | 2,982
Change in expected cash flow | 484 | 143 | (242)
Transfer from (to) non-accretable discount | 62 | (1,099) | 616
Balance at end of period | 560 | 885 | 3,682
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non Accretable Discount Movement Schedule [Roll Forward] |  |  |
Balance at beginning of period | 19,284 | 18,120 | 18,834
Change in actual and expected losses | (277) | 65 | (98)
Transfer (to) from accretable yield | (62) | 1,099 | (616)
Balance at end of period | $ 18,945 | $ 19,284 | $ 18,120

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition The current period principal losses on covered loans. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition The change in the estimate of cash flows expected to be collected, after acquisition of loans, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition Amount of increase of reclassification from nonaccretable difference to or from the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References No definition available. + Details
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- Definition Amount of increase (decrease) in future cash flow as a result of changes in discount rate. + References No definition available. + Details
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- Definition The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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- Definition Amount of accretion recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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