CREDIT QUALITY ASSESSMENT (Credit Quality of Loan Portfolio) (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		$ 27,748
Loans 90 days past due	$ 1,428	0
Non-accrual loans	75,938	38,632
Loans aquired with deteriorated credit quality		13,084
Current loans		6,625,768
Total loans	10,343,043	6,705,232
Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		1,278
Loans 90 days past due	0	0
Non-accrual loans	20,246	8,450
Loans aquired with deteriorated credit quality		2,539
Current loans		788,752
Total loans	2,222,810	801,019
Consumer [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		4,214
Loans 90 days past due	0	0
Non-accrual loans	7,800	4,107
Loans aquired with deteriorated credit quality		993
Current loans		457,450
Total loans	558,434	466,764
Commercial Real Estate Portfolio Segment \| Commercial AD&C [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		0
Loans 90 days past due	0	0
Non-accrual loans	2,957	829
Loans aquired with deteriorated credit quality		0
Current loans		683,181
Total loans	997,423	684,010
Commercial Real Estate Portfolio Segment \| Commercial Investor RE [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		932
Loans 90 days past due	775	0
Non-accrual loans	26,482	8,437
Loans aquired with deteriorated credit quality		9,544
Current loans		2,150,243
Total loans	3,581,778	2,169,156
Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied RE [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		316
Loans 90 days past due	515	0
Non-accrual loans	6,729	4,148
Loans aquired with deteriorated credit quality		0
Current loans		1,284,213
Total loans	1,601,803	1,288,677
Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		19,394
Loans 90 days past due	138	0
Non-accrual loans	11,724	12,661
Loans aquired with deteriorated credit quality		8
Current loans		1,117,264
Total loans	1,211,745	1,149,327
Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due		1,614
Loans 90 days past due	0	0
Non-accrual loans	0	0
Loans aquired with deteriorated credit quality		0
Current loans		144,665
Total loans	169,050	146,279
30 - 59 Days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	27,162	19,986
30 - 59 Days \| Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,871	908
30 - 59 Days \| Consumer [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	4,354	2,697
30 - 59 Days \| Commercial Real Estate Portfolio Segment \| Commercial AD&C [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	635	0
30 - 59 Days \| Commercial Real Estate Portfolio Segment \| Commercial Investor RE [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	5,040	932
30 - 59 Days \| Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied RE [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	2,606	316
30 - 59 Days \| Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	11,361	14,853
30 - 59 Days \| Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,295	280
60-89 days
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	7,433	7,762
60-89 days \| Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	133	370
60-89 days \| Consumer [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,472	1,517
60-89 days \| Commercial Real Estate Portfolio Segment \| Commercial AD&C [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
60-89 days \| Commercial Real Estate Portfolio Segment \| Commercial Investor RE [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	3,471	0
60-89 days \| Commercial Real Estate Portfolio Segment \| Commercial Owner Occupied RE [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	0	0
60-89 days \| Residential Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	1,329	4,541
60-89 days \| Residential Real Estate Portfolio Segment \| Residential Construction
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due	$ 1,028	$ 1,334

Loans And Leases Receivable, Current

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