LOANS - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loans receivable: balance at end of period
Total	$ 2,641,092	$ 2,490,227
Commercial real estate
Loans receivable: balance at end of period
Total	930,661	826,699
Commercial and industrial
Loans receivable: balance at end of period
Total	423,291	404,870
Residential real estate
Loans receivable: balance at end of period
Total	1,151,857	1,144,698
Consumer
Loans receivable: balance at end of period
Total	135,283	113,960
Business Activities Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	7,950	13,855
Collectively evaluated	1,827,280	1,617,042
Total	1,835,230	1,630,897
Business Activities Loans \| Commercial real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	3,964	9,835
Collectively evaluated	693,474	569,899
Total	697,438	579,734
Business Activities Loans \| Commercial and industrial
Loans receivable: balance at end of period
Individually evaluated for impairment	1,353	1,445
Collectively evaluated	325,217	312,217
Total	326,570	313,662
Business Activities Loans \| Residential real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	2,620	2,562
Collectively evaluated	738,067	667,627
Total	740,687	670,189
Business Activities Loans \| Consumer
Loans receivable: balance at end of period
Individually evaluated for impairment	13	13
Collectively evaluated	70,522	67,299
Total	70,535	67,312
Acquired Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	1,675	1,358
Purchased credit impaired	18,553	10,106
Collectively evaluated	785,634	847,866
Total	805,862	859,330
Acquired Loans \| Commercial real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	258	188
Purchased credit impaired	8,673	6,307
Collectively evaluated	224,292	240,470
Total	233,223	246,965
Acquired Loans \| Commercial and industrial
Loans receivable: balance at end of period
Individually evaluated for impairment	385	426
Purchased credit impaired	2,932	679
Collectively evaluated	93,404	90,103
Total	96,721	91,208
Acquired Loans \| Residential real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	1,032	744
Purchased credit impaired	5,591	3,095
Collectively evaluated	404,547	470,670
Total	411,170	474,509
Acquired Loans \| Consumer
Loans receivable: balance at end of period
Individually evaluated for impairment	0	0
Purchased credit impaired	1,357	25
Collectively evaluated	63,391	46,623
Total	$ 64,748	$ 46,648

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=118936363&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=118952595&loc=d3e4428-111522

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- References

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