LOANS AND LEASES (Schedule of Loan Modifications) (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($) N	Sep. 30, 2020 USD ($) N
Number of Loans | N	1	3
Post-Modification Outstanding Recorded Investment | $	$ 341	$ 427
Residential Portfolio Segment [Member] | Primary Residential Mortgages [Member]
Number of Loans | N	1	2
Post-Modification Outstanding Recorded Investment | $	$ 341	$ 388
Deferral [Member]
Number of Loans | N		403
Post-Modification Outstanding Recorded Investment | $		$ 827,817
Deferral [Member] | Agricultural Sector [Member]
Number of Loans | N		1
Post-Modification Outstanding Recorded Investment | $		$ 133
Deferral [Member] | Residential Portfolio Segment [Member] | Junior Lien [Member]
Number of Loans | N		4
Post-Modification Outstanding Recorded Investment | $		$ 248
Deferral [Member] | Residential Portfolio Segment [Member] | Primary Residential Mortgages [Member]
Number of Loans | N		170
Post-Modification Outstanding Recorded Investment | $		$ 69,941
Deferral [Member] | Residential Portfolio Segment [Member] | Home Equity Lines of Credit [Member]
Number of Loans | N		16
Post-Modification Outstanding Recorded Investment | $		$ 4,094
Deferral [Member] | Residential Portfolio Segment [Member] | Multifamily Property [Member]
Number of Loans | N		70
Post-Modification Outstanding Recorded Investment | $		$ 263,877
Deferral [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Property [Member]
Number of Loans | N		33
Post-Modification Outstanding Recorded Investment | $		$ 30,058
Deferral [Member] | Commercial Real Estate Portfolio Segment [Member] | Investment Property [Member]
Number of Loans | N		71
Post-Modification Outstanding Recorded Investment | $		$ 400,425
Deferral [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member]
Number of Loans | N		28
Post-Modification Outstanding Recorded Investment | $		$ 28,370
Deferral [Member] | Commercial Portfolio Segment [Member] | Lease Financing [Member]
Number of Loans | N		7
Post-Modification Outstanding Recorded Investment | $		$ 26,360
Deferral [Member] | Commercial Portfolio Segment [Member] | Construction [Member]
Number of Loans | N		3
Post-Modification Outstanding Recorded Investment | $		$ 4,311