LOANS (Schedule of Risk Category of Loans by Class of Loans) (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Total loans		$ 4,369,573	$ 4,389,641
Lease Financing [Member]
Total loans		305,931	258,401
Agricultural Sector [Member]
Total loans		3,068	3,043
Pass [Member]
Total loans		4,169,699	4,317,090
Pass [Member] | Lease Financing [Member]
Total loans		305,931	258,401
Pass [Member] | Agricultural Sector [Member]
Total loans		3,068	3,043
Special Mention [Member]
Total loans		162,103	13,643
Substandard [Member]
Total loans		37,771	58,908
Residential Portfolio Segment [Member] | Junior Lien [Member]
Total loans		4,527	7,011
Residential Portfolio Segment [Member] | Primary Residential Mortgages [Member]
Total loans		512,841	578,306
Residential Portfolio Segment [Member] | Home Equity Lines of Credit [Member]
Total loans		50,545	57,248
Residential Portfolio Segment [Member] | Multifamily Property [Member]
Total loans		1,126,946	1,210,003
Residential Portfolio Segment [Member] | Pass [Member] | Junior Lien [Member]
Total loans		4,483	6,992
Residential Portfolio Segment [Member] | Pass [Member] | Primary Residential Mortgages [Member]
Total loans		504,795	570,353
Residential Portfolio Segment [Member] | Pass [Member] | Home Equity Lines of Credit [Member]
Total loans		50,068	57,245
Residential Portfolio Segment [Member] | Pass [Member] | Multifamily Property [Member]
Total loans		1,121,145	1,209,288
Residential Portfolio Segment [Member] | Special Mention [Member] | Primary Residential Mortgages [Member]
Total loans		1,398	853
Residential Portfolio Segment [Member] | Special Mention [Member] | Multifamily Property [Member]
Total loans		5,441
Residential Portfolio Segment [Member] | Substandard [Member] | Junior Lien [Member]
Total loans		44	19
Residential Portfolio Segment [Member] | Substandard [Member] | Primary Residential Mortgages [Member]
Total loans		6,648	7,100
Residential Portfolio Segment [Member] | Substandard [Member] | Home Equity Lines of Credit [Member]
Total loans		477	3
Residential Portfolio Segment [Member] | Substandard [Member] | Multifamily Property [Member]
Total loans		360	715
Commercial Real Estate Portfolio Segment [Member] | Investment Property [Member]
Total loans		995,613	1,095,182
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Property [Member]
Total loans		240,638	247,388
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Investment Property [Member]
Total loans		893,115	1,053,445
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Property [Member]
Total loans		10,417
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Investment Property [Member]
Total loans		91,162	6,325
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Property [Member]
Total loans		2,392	2,031
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Investment Property [Member]
Total loans		11,336	35,412
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member]
Total loans	[1]	1,059,399	867,295
Commercial Portfolio Segment [Member] | Construction [Member]
Total loans		12,773	5,520
Commercial Portfolio Segment [Member] | Pass [Member] | Commercial and Industrial Sector [Member]
Total loans		989,281	847,285
Commercial Portfolio Segment [Member] | Pass [Member] | Construction [Member]
Total loans		12,692	5,437
Commercial Portfolio Segment [Member] | Special Mention [Member] | Commercial and Industrial Sector [Member]
Total loans		53,604	6,382
Commercial Portfolio Segment [Member] | Special Mention [Member] | Construction [Member]
Total loans		81	83
Commercial Portfolio Segment [Member] | Substandard [Member] | Commercial and Industrial Sector [Member]
Total loans		16,514	13,628
Consumer and Other Loans [Member]
Total loans		44,483	58,213
Consumer and Other Loans [Member] | Pass [Member]
Total loans		$ 44,483	$ 58,213

[1] The December 31, 2020 balance includes PPP loans of $195.6 million.