LOANS (Schedule of Schedule of Risk Category of Loans by Class of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Total Loans	$ 3,702,532	$ 3,310,104
Impaired loans	25,164	31,290
Residential Portfolio Segment [Member] | Junior Lien [Member]
Total Loans	7,073	9,206
Consumer and Other [Member]
Total Loans	99,247	73,621
Primary Residential Mortgages [Member] | Residential Portfolio Segment [Member]
Total Loans	605,569	557,970
Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member]
Total Loans	67,497	65,683
Multifamily Property [Member] | Residential Portfolio Segment [Member]
Total Loans	1,388,958	1,459,594
Owner Occupied Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	253,492	176,123
Investment Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	874,098	752,258
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Total Loans	92	1,497
Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Total Loans	316,294	213,983
Agricultural Sector [Member]
Total Loans	160	169
Lease Financing [Member]
Total Loans	90,052
Pass [Member]
Total Loans	3,611,411	3,251,155
Pass [Member] | Residential Portfolio Segment [Member] | Junior Lien [Member]
Total Loans	7,021	8,977
Pass [Member] | Consumer and Other [Member]
Total Loans	97,135	73,621
Pass [Member] | Primary Residential Mortgages [Member] | Residential Portfolio Segment [Member]
Total Loans	594,846	541,359
Pass [Member] | Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member]
Total Loans	67,470	65,630
Pass [Member] | Multifamily Property [Member] | Residential Portfolio Segment [Member]
Total Loans	1,371,825	1,456,328
Pass [Member] | Owner Occupied Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	249,003	170,851
Pass [Member] | Investment Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	827,558	724,203
Pass [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member]
Total Loans		1,400
Pass [Member] | Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Total Loans	306,341	208,617
Pass [Member] | Agricultural Sector [Member]
Total Loans	160	169
Special Mention [Member]
Total Loans	49,415	13,151
Special Mention [Member] | Residential Portfolio Segment [Member] | Junior Lien [Member]
Total Loans
Special Mention [Member] | Consumer and Other [Member]
Total Loans
Special Mention [Member] | Primary Residential Mortgages [Member] | Residential Portfolio Segment [Member]
Total Loans	866	660
Special Mention [Member] | Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member]
Total Loans
Special Mention [Member] | Multifamily Property [Member] | Residential Portfolio Segment [Member]
Total Loans	16,755	2,867
Special Mention [Member] | Owner Occupied Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	837
Special Mention [Member] | Investment Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	23,377	5,116
Special Mention [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member]
Total Loans	92	97
Special Mention [Member] | Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Total Loans	7,488	4,411
Special Mention [Member] | Agricultural Sector [Member]
Total Loans
Substandard [Member]
Total Loans	41,706	45,798
Impaired loans	21,800	27,900
Substandard [Member] | Residential Portfolio Segment [Member] | Junior Lien [Member]
Total Loans	52	229
Substandard [Member] | Consumer and Other [Member]
Total Loans	2,112
Substandard [Member] | Primary Residential Mortgages [Member] | Residential Portfolio Segment [Member]
Total Loans	9,857	15,951
Substandard [Member] | Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member]
Total Loans	27	53
Substandard [Member] | Multifamily Property [Member] | Residential Portfolio Segment [Member]
Total Loans	378	399
Substandard [Member] | Owner Occupied Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	3,652	5,272
Substandard [Member] | Investment Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans	23,163	22,939
Substandard [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member]
Total Loans
Substandard [Member] | Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Total Loans	2,465	955
Substandard [Member] | Agricultural Sector [Member]
Total Loans
Substandard [Member] | Lease Financing [Member]
Total Loans
Doubtful [Member]
Total Loans
Doubtful [Member] | Residential Portfolio Segment [Member] | Junior Lien [Member]
Total Loans
Doubtful [Member] | Consumer and Other [Member]
Total Loans
Doubtful [Member] | Primary Residential Mortgages [Member] | Residential Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Multifamily Property [Member] | Residential Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Owner Occupied Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Investment Property [Member] | Commercial Real Estate Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Total Loans
Doubtful [Member] | Agricultural Sector [Member]
Total Loans