LOANS AND LEASES (Schedule of Balances by Portfolio Class, Based on Impairment Method) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Total Loans Individually Evaluated for Impairment	$ 29,185	$ 31,300
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	258	262
Total Loans Collectively Evaluated for Impairment	3,864,733	3,893,012
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	38,395	38,242
Total Loans	3,893,918	3,924,312
Total Ending ALLL	38,653	38,504	$ 37,696	$ 36,440
Residential Portfolio Segment [Member] \| Primary Residential Mortgages [Member]
Total Loans Individually Evaluated for Impairment	9,131	9,518
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	258	262
Total Loans Collectively Evaluated for Impairment	589,168	591,373
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	3,219	3,244
Total Loans	598,299	600,891
Total Ending ALLL	3,477	3,506	4,403	4,085
Residential Portfolio Segment [Member] \| Home Equity Lines of Credit [Member]
Total Loans Individually Evaluated for Impairment	214	255
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	0
Total Loans Collectively Evaluated for Impairment	57,422	61,936
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	152	164
Total Loans	57,636	62,191
Total Ending ALLL	152	164	192	221
Residential Portfolio Segment [Member] \| Multifamily Property [Member]
Total Loans Individually Evaluated for Impairment	0	1,262
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	0
Total Loans Collectively Evaluated for Impairment	1,104,406	1,134,543
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	5,768	5,959
Total Loans	1,104,406	1,135,805
Total Ending ALLL	5,768	5,959	9,140	10,007
Residential Portfolio Segment [Member] \| Junior Lien [Member]
Total Loans Individually Evaluated for Impairment	33	36
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	0
Total Loans Collectively Evaluated for Impairment	7,396	7,382
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	15	15
Total Loans	7,429	7,418
Total Ending ALLL	15	15	16	12
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Property [Member]
Total Loans Individually Evaluated for Impairment	1,514	1,574
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	0
Total Loans Collectively Evaluated for Impairment	250,434	259,619
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	2,534	2,614
Total Loans	251,948	261,193
Total Ending ALLL	2,534	2,614	2,364	2,385
Commercial Real Estate Portfolio Segment [Member] \| Investment Property [Member]
Total Loans Individually Evaluated for Impairment	18,293	18,655
Total Loans Collectively Evaluated for Impairment	987,431	983,263
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	14,410	14,248
Total Loans	1,005,724	1,001,918
Total Ending ALLL	14,410	14,248	12,367	11,933
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Total Loans Collectively Evaluated for Impairment	86	86
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	1	1
Total Loans	86	86
Total Ending ALLL	1	1	1	1
Consumer and Other Loans [Member]
Total Loans Collectively Evaluated for Impairment	59,138	65,180
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	306	384
Total Loans	59,138	65,180
Total Ending ALLL	306	384	422	349
Commercial and Industrial Sector [Member] \| Commercial Portfolio Segment [Member]
Total Loans Individually Evaluated for Impairment	0
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	0
Total Loans Collectively Evaluated for Impairment	633,590	616,838
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	10,185	9,839
Total Loans	633,590	616,838
Total Ending ALLL	10,185	9,839	7,753	$ 6,563
Lease Financing [Member]
Total Loans Individually Evaluated for Impairment	0
Ending ALLL Attributable to Loans Individually Evaluated for Impairment	0
Total Loans Collectively Evaluated for Impairment	175,517	172,643
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	1,803	1,772
Total Loans	175,517	172,643
Total Ending ALLL	1,803	1,772
Agricultural Sector [Member]
Total Loans Collectively Evaluated for Impairment	145	149
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment	2	2
Total Loans	145	149
Total Ending ALLL	$ 2	$ 2	$ 2

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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