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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, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) loans | Jun. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Financing Receivable, Recorded Investment |  |  |  |  |
Loans and leases transferred to third parties total principal amount | $ 32,000 | $ 6,600 | $ 46,600 | $ 11,700 |
Gain (Loss) Recognized on Participation Interest in Originated Loans |  |  | 0 |  |
Loan participations purchased on the Corporation's balance sheet | 475 |  | 475 |  | $ 482
Total amount of outstanding loans transferred to third parties as loan participations | 140,000 |  | 140,000 |  | 116,600
Total amount of loan participations remaining on the Corporations balance sheet | 98,400 |  | 98,400 |  | 96,400
Loans in the participation sold portfolio, considered impaired | 1,000 |  | 1,000 |  | 1,200
Residential Real Estate Loans Sold, Principal Amount | 10,300 |  | 19,500 |  | 0
Total gross loans and leases receivable | 1,351,711 | $ 1,008,615 | 1,351,711 | $ 1,008,615 | 1,281,792
Non-accrual troubled debt restructurings | 6,900 |  | 6,900 |  | 7,400
Unfunded commitments, troubled debt restructurings | 0 |  | $ 0 |  |
Troubled debt restructurings, subsequent default, number of loans | loans |  |  | 0 |  |
Loans and leases receivable, difference between recorded investment and unpaid principal balance | 3,800 |  | $ 3,800 |  | 4,400
Performing troubled debt restructurings | 1,944 |  | 1,944 |  | 2,003
Substandard |  |  |  |  |
Financing Receivable, Recorded Investment |  |  |  |  |
Total gross loans and leases receivable | 10,600 |  | 10,600 |  | 27,100
Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment |  |  |  |  |
Total gross loans and leases receivable | 0 |  | 0 |  | 0
Doubtful |  |  |  |  |
Financing Receivable, Recorded Investment |  |  |  |  |
Total gross loans and leases receivable | 0 |  | 0 |  | 0
Loss |  |  |  |  |
Financing Receivable, Recorded Investment |  |  |  |  |
Total gross loans and leases receivable | $ 0 |  | $ 0 |  | $ 0

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