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LOANS AND LEASES (Schedule of Loan Balances by Portfolio Class) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Total loans | $ 3,893,918 | $ 3,924,312
Net deferred costs | 3,498 | 3,619
Total loans including net deferred costs | $ 3,897,416 | $ 3,927,931
Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 100.00% | 100.00%
Residential Portfolio Segment [Member] | Primary Residential Mortgages [Member] |  |
Total loans | $ 598,299 | $ 600,891
Residential Portfolio Segment [Member] | Primary Residential Mortgages [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 15.37% | 15.31%
Residential Portfolio Segment [Member] | Home Equity Lines of Credit [Member] |  |
Total loans | $ 57,636 | $ 62,191
Total loans including net deferred costs | $ 57,639 | $ 62,191
Residential Portfolio Segment [Member] | Home Equity Lines of Credit [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 1.48% | 1.58%
Residential Portfolio Segment [Member] | Multifamily Property [Member] |  |
Total loans | $ 1,104,406 | $ 1,135,805
Total loans including net deferred costs | $ 1,104,406 | $ 1,135,805
Residential Portfolio Segment [Member] | Multifamily Property [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 28.36% | 28.94%
Residential Portfolio Segment [Member] | Junior Lien [Member] |  |
Total loans | $ 7,429 | $ 7,418
Residential Portfolio Segment [Member] | Junior Lien [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 0.19% | 0.19%
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Property [Member] |  |
Total loans | $ 251,948 | $ 261,193
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Property [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 6.47% | 6.65%
Commercial Real Estate Portfolio Segment [Member] | Investment Property [Member] |  |
Total loans | $ 1,005,724 | $ 1,001,918
Commercial Real Estate Portfolio Segment [Member] | Investment Property [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 25.83% | 25.53%
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |
Total loans | $ 86 | $ 86
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) |  | 0.01%
Consumer and Other Loans [Member] |  |
Total loans | $ 59,138 | $ 65,180
Consumer and Other Loans [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 1.52% | 1.66%
Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member] |  |
Total loans | $ 633,590 | $ 616,838
Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 16.27% | 15.72%
Lease Financing [Member] |  |
Total loans | $ 175,517 | $ 172,643
Lease Financing [Member] | Commercial Portfolio Segment [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) | 4.51% | 4.40%
Agricultural Sector [Member] |  |
Total loans | $ 145 | $ 149
Agricultural Sector [Member] | Customer Concentration Risk [Member] | Loans and Finance Receivables, Gross [Member] |  |
Total loans (in percent) |  | 0.01%

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