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Loans (Interest Income Recognized in loans individually evaluated for impairment) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Loan [Member] |  |  |
Impaired Financing Receivable Interest Income Accrual Method [Abstract] |  |  |
Total Interest Income | $ 5,271 | $ 5,714 | $ 5,583
Impaired Financing Receivable Average Recorded Investment [Abstract] |  |  |
Total Average Recorded Investment | 156,167 | 150,671 | 251,489
Originated Loans [Member] |  |  |
Impaired Financing Receivable Interest Income Accrual Method [Abstract] |  |  |
Total Interest Income | 5,271 | 5,714 | 5,583
Impaired Financing Receivable Average Recorded Investment [Abstract] |  |  |
Total Average Recorded Investment | 155,420 | 149,877 | 250,562
Acquired loans accounted for under ASC 310-20 [Member] |  |  |
Impaired Financing Receivable Interest Income Accrual Method [Abstract] |  |  |
Total Interest Income | 0 | 0 |
Impaired Financing Receivable Average Recorded Investment [Abstract] |  |  |
Total Average Recorded Investment | 0 | 0 |
Commercial Loan [Member] | Originated Loans [Member] |  |  |
Impaired Financing Receivable Interest Income Accrual Method [Abstract] |  |  |
Impaired Financing Receivable With Related Allowance Interest Income Accrual Method | 1,624 | 1,538 | 452
Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method | 1,091 | 875 | 1,941
Impaired Financing Receivable Average Recorded Investment [Abstract] |  |  |
Impaired Financing Receivable With Related Allowance Average Recorded Investment | 44,727 | 25,797 | 118,980
Impaired Financing Receivable With No Related Allowance Average Recorded Investment | 26,199 | 36,666 | 40,443
Commercial Loan [Member] | Acquired loans accounted for under ASC 310-20 [Member] |  |  |
Impaired Financing Receivable Interest Income Accrual Method [Abstract] |  |  |
Impaired Financing Receivable With Related Allowance Interest Income Accrual Method | 0 | 0 | 0
Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method | 0 | 0 | 0
Impaired Financing Receivable Average Recorded Investment [Abstract] |  |  |
Impaired Financing Receivable With Related Allowance Average Recorded Investment | 747 | 794 | 319
Impaired Financing Receivable With No Related Allowance Average Recorded Investment | 0 | 0 | 608
Troubled Debt Restructuring [Member] | Originated Loans [Member] |  |  |
Impaired Financing Receivable Interest Income Accrual Method [Abstract] |  |  |
Impaired Financing Receivable With Related Allowance Interest Income Accrual Method | 2,556 | 3,301 | 3,190
Impaired Financing Receivable Average Recorded Investment [Abstract] |  |  |
Impaired Financing Receivable With Related Allowance Average Recorded Investment | $ 84,494 | $ 87,414 | $ 91,139

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
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