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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Narrative Disclosures) (Details) loans in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) loans | Mar. 31, 2016 USD ($) loans | Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment |  |  |
Total amount of SBA loan participations remaining on the corporations balance sheet | $ 67,400,000 |  | $ 62,100,000
SBA loans in the participation sold portfolio, considered impaired | 11,100,000 |  | 5,500,000
Guaranteed Portion of SBA Loans Sold to Third Parties Total | 3,300,000 | $ 13,100,000 |
Total amount of outstanding SBA loans sold | 101,700,000 |  | 105,100,000
Unguaranteed portion of Sold SBA Loans Retained on the Balance Sheet | 31,400,000 |  | 32,200,000
Unguaranteed Portion of Sold Impaired SBA Loans Retained on the Balance Sheet | 1,500,000 |  | 2,500,000
Loans and leases transferred to third parties total principal amount | 5,600,000 | 400,000 |
Gain (Loss) Recognized on Participation Interest in Originated Loans | 0 | 0 |
Total amount of outstanding loans transferred to third parties as loan participations | 86,600,000 |  | 102,700,000
Total amount of loan participations remaining on the Corporations balance sheet | 127,400,000 |  | 106,100,000
Loans in the participation sold portfolio, considered impaired | 0 |  | 0
Loan participations purchased on the Corporation's balance sheet | 707,000 |  | 1,200,000
Residential Real Estate Loans Sold, Principal Amount | 1,000,000 | $ 7,200,000 |
Total gross loans and leases receivable | 1,482,297,000 |  | 1,451,864,000
Non-accrual troubled debt restructurings | 12,400,000 |  | 12,800,000
Unfunded commitments, troubled debt restructurings | $ 0 |  |
Troubled debt restructurings, subsequent default, number of loans | loans | 0 | 0 |
Troubled debt restructurings, subsequent default, recorded investment | $ 878,000 |  |
Loans and leases receivable, difference between recorded investment and unpaid principal balance | 3,400,000 |  | 3,400,000
Performing troubled debt restructurings | 702,000 |  | 717,000
Substandard |  |  |
Financing Receivable, Recorded Investment |  |  |
Total gross loans and leases receivable | 46,300,000 |  | 34,300,000
Special Mention |  |  |
Financing Receivable, Recorded Investment |  |  |
Total gross loans and leases receivable | 0 |  | 0
Doubtful |  |  |
Financing Receivable, Recorded Investment |  |  |
Total gross loans and leases receivable | 0 |  | 0
Loss |  |  |
Financing Receivable, Recorded Investment |  |  |
Total gross loans and leases receivable | $ 0 |  | $ 0

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