LOANS (Schedule of Schedule of Risk Category of Loans by Class of Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Total Loans	$ 3,438,236	$ 3,310,104
Impaired loans	28,762	31,290
Residential Portfolio Segment [Member] \| Junior Lien [Member]
Total Loans	8,487	9,206
Consumer and Other [Member]
Total Loans	73,880	73,621
Primary Residential Mortgages [Member] \| Residential Portfolio Segment [Member]
Total Loans	602,436	557,970
Home Equity Lines of Credit [Member] \| Residential Portfolio Segment [Member]
Total Loans	68,055	65,683
Multifamily Property [Member] \| Residential Portfolio Segment [Member]
Total Loans	1,468,890	1,459,594
Owner Occupied Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	211,573	176,123
Investment Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	790,190	752,258
Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Total Loans	96	1,497
Commercial and Industrial Sector [Member] \| Commercial Portfolio Segment [Member]
Total Loans	214,463	213,983
Agricultural Sector [Member]
Total Loans	166	169
Pass [Member]
Total Loans	3,380,697	3,251,155
Pass [Member] \| Residential Portfolio Segment [Member] \| Junior Lien [Member]
Total Loans	8,375	8,977
Pass [Member] \| Consumer and Other [Member]
Total Loans	73,880	73,621
Pass [Member] \| Primary Residential Mortgages [Member] \| Residential Portfolio Segment [Member]
Total Loans	587,994	541,359
Pass [Member] \| Home Equity Lines of Credit [Member] \| Residential Portfolio Segment [Member]
Total Loans	68,002	65,630
Pass [Member] \| Multifamily Property [Member] \| Residential Portfolio Segment [Member]
Total Loans	1,464,262	1,456,328
Pass [Member] \| Owner Occupied Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	206,478	170,851
Pass [Member] \| Investment Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	762,376	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	209,164	208,617
Pass [Member] \| Agricultural Sector [Member]
Total Loans	166	169
Special Mention [Member]
Total Loans	14,536	13,151
Special Mention [Member] \| Primary Residential Mortgages [Member] \| Residential Portfolio Segment [Member]
Total Loans	751	660
Special Mention [Member] \| Multifamily Property [Member] \| Residential Portfolio Segment [Member]
Total Loans	4,234	2,867
Special Mention [Member] \| Investment Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	5,025	5,116
Special Mention [Member] \| Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Total Loans	96	97
Special Mention [Member] \| Commercial and Industrial Sector [Member] \| Commercial Portfolio Segment [Member]
Total Loans	4,430	4,411
Substandard [Member]
Total Loans	43,003	45,798
Impaired loans	25,300	27,900
Substandard [Member] \| Residential Portfolio Segment [Member] \| Junior Lien [Member]
Total Loans	112	229
Substandard [Member] \| Primary Residential Mortgages [Member] \| Residential Portfolio Segment [Member]
Total Loans	13,691	15,951
Substandard [Member] \| Home Equity Lines of Credit [Member] \| Residential Portfolio Segment [Member]
Total Loans	53	53
Substandard [Member] \| Multifamily Property [Member] \| Residential Portfolio Segment [Member]
Total Loans	394	399
Substandard [Member] \| Owner Occupied Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	5,095	5,272
Substandard [Member] \| Investment Property [Member] \| Commercial Real Estate Portfolio Segment [Member]
Total Loans	22,789	22,939
Substandard [Member] \| Commercial and Industrial Sector [Member] \| Commercial Portfolio Segment [Member]
Total Loans	$ 869	$ 955