LOANS - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loans receivable: balance at end of period
Total	$ 2,490,227	$ 2,485,613
Commercial real estate
Loans receivable: balance at end of period
Total	826,699	826,746
Commercial and industrial
Loans receivable: balance at end of period
Total	404,870	379,423
Residential real estate
Loans receivable: balance at end of period
Total	1,144,698	1,155,682
Consumer
Loans receivable: balance at end of period
Total	113,960	123,762
Business Activities Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	13,855	9,647
Collectively evaluated	1,617,042	1,442,983
Total	1,630,897	1,452,630
Business Activities Loans \| Commercial real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	9,835	7,604
Collectively evaluated	569,899	526,407
Total	579,734	534,011
Business Activities Loans \| Commercial and industrial
Loans receivable: balance at end of period
Individually evaluated for impairment	1,445	626
Collectively evaluated	312,217	267,378
Total	313,662	268,004
Business Activities Loans \| Residential real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	2,562	1,404
Collectively evaluated	667,627	590,007
Total	670,189	591,411
Business Activities Loans \| Consumer
Loans receivable: balance at end of period
Individually evaluated for impairment	13	13
Collectively evaluated	67,299	59,191
Total	67,312	59,204
Acquired Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	1,358	1,146
Purchased credit impaired	10,106	12,587
Collectively evaluated	847,866	1,019,250
Total	859,330	1,032,983
Acquired Loans \| Commercial real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	188	241
Purchased credit impaired	6,307	8,655
Collectively evaluated	240,470	283,839
Total	246,965	292,735
Acquired Loans \| Commercial and industrial
Loans receivable: balance at end of period
Individually evaluated for impairment	426	571
Purchased credit impaired	679	632
Collectively evaluated	90,103	110,216
Total	91,208	111,419
Acquired Loans \| Residential real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	744	271
Purchased credit impaired	3,095	3,259
Collectively evaluated	470,670	560,741
Total	474,509	564,271
Acquired Loans \| Consumer
Loans receivable: balance at end of period
Individually evaluated for impairment	0	63
Purchased credit impaired	25	41
Collectively evaluated	46,623	64,454
Total	$ 46,648	$ 64,558

Financing Receivable, Purchased Credit-Impaired Loans

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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- References

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