LOANS AND LEASES (Schedule of Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Unpaid Principal Balance
With no related allowance recorded	$ 32,385	$ 34,330
Total loans individually evaluated for Impairment	33,390	35,346
Recorded Investment
With no related allowance recorded	28,180	30,284
Total loans individually evaluated for Impairment	29,185	31,300
Average Impaired Loans
With no related allowance recorded	28,521	24,339
Total loans individually evaluated for Impairment	29,573	25,483
With no related allowance recorded	32,385	34,330
With no related allowance recorded	28,180	30,284
With no related allowance recorded	28,521	24,339
Multifamily Property [Member]
Recorded Investment
With no related allowance recorded		1,262
Average Impaired Loans
With no related allowance recorded		105
With no related allowance recorded		1,262
With no related allowance recorded		105
Residential Portfolio Segment [Member]
Unpaid Principal Balance
With related allowance recorded	1,005	1,016
Recorded Investment
With related allowance recorded	1,005	1,016
Specific Reserves	258	262
Average Impaired Loans
With related allowance recorded	1,052	1,144
Residential Portfolio Segment [Member] \| Junior Lien [Member]
Unpaid Principal Balance
With no related allowance recorded	100	102
Recorded Investment
With no related allowance recorded	33	36
Average Impaired Loans
With no related allowance recorded	34	45
With no related allowance recorded	100	102
With no related allowance recorded	33	36
With no related allowance recorded	34	45
Residential Portfolio Segment [Member] \| Primary Residential Mortgages [Member]
Unpaid Principal Balance
With no related allowance recorded	9,314	9,789
With related allowance recorded	1,005	1,016
Recorded Investment
With no related allowance recorded	8,126	8,502
With related allowance recorded	1,005	1,016
Specific Reserves		262
Average Impaired Loans
With no related allowance recorded	8,304	8,042
With related allowance recorded	1,052	1,144
With no related allowance recorded	9,314	9,789
With no related allowance recorded	8,126	8,502
With no related allowance recorded	8,304	8,042
Residential Portfolio Segment [Member] \| Home Equity Lines of Credit [Member]
Unpaid Principal Balance
With no related allowance recorded	216	257
Recorded Investment
With no related allowance recorded	214	255
Average Impaired Loans
With no related allowance recorded	214	123
With no related allowance recorded	216	257
With no related allowance recorded	214	255
With no related allowance recorded	214	123
Residential Portfolio Segment [Member] \| Multifamily Property [Member]
Unpaid Principal Balance
With no related allowance recorded		1,262
Average Impaired Loans
With no related allowance recorded		1,262
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Property [Member]
Unpaid Principal Balance
With no related allowance recorded	2,714	2,741
Recorded Investment
With no related allowance recorded	1,514	1,574
Average Impaired Loans
With no related allowance recorded	1,535	2,025
With no related allowance recorded	2,714	2,741
With no related allowance recorded	1,514	1,574
With no related allowance recorded	1,535	2,025
Commercial Real Estate Portfolio Segment [Member] \| Investment Property [Member]
Unpaid Principal Balance
With no related allowance recorded	20,041	20,179
Recorded Investment
With no related allowance recorded	18,293	18,655
Average Impaired Loans
With no related allowance recorded	18,434	13,999
With no related allowance recorded	20,041	20,179
With no related allowance recorded	18,293	18,655
With no related allowance recorded	$ 18,434	$ 13,999

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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