LOANS - Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	$ 0	$ 343
Nonaccrual Including 90 Days or More Past Due	7,731	4,369
Total Past Due and Nonaccrual	12,811	11,078
Current	4,625,299	3,661,518
Total Loans	4,638,110	3,672,596
Interest earned on non-accrual loans	0
Accrued interest on non-accrual loans	85
30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	1,920	4,465
60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	3,160	1,901
Commercial real estate occupied:
Past Due and Nonaccrual Loans
Total Loans		1,565,687
Commercial real estate occupied: \| Owner
Past Due and Nonaccrual Loans
Total Loans		531,088
Commercial real estate occupied: \| Non-owner
Past Due and Nonaccrual Loans
Total Loans		1,034,599
Commercial real estate occupied: \| Mortgage loans \| Owner
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	0
Nonaccrual Including 90 Days or More Past Due	206	225
Total Past Due and Nonaccrual	1,116	1,575
Current	527,002	529,513
Total Loans	528,118	531,088
Commercial real estate occupied: \| Mortgage loans \| Owner \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	38	917
Commercial real estate occupied: \| Mortgage loans \| Owner \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	872	433
Commercial real estate occupied: \| Mortgage loans \| Non-owner
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	0
Nonaccrual Including 90 Days or More Past Due	602	512
Total Past Due and Nonaccrual	1,707	610
Current	1,062,916	1,033,989
Total Loans	1,064,623	1,034,599
Commercial real estate occupied: \| Mortgage loans \| Non-owner \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	436	98
Commercial real estate occupied: \| Mortgage loans \| Non-owner \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	669	0
Multi-family
Past Due and Nonaccrual Loans
Total Loans		812,174
Multi-family \| Mortgage loans
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	0
Nonaccrual Including 90 Days or More Past Due	0	0
Total Past Due and Nonaccrual	0	0
Current	844,066	812,174
Total Loans	844,066	812,174
Multi-family \| Mortgage loans \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	0	0
Multi-family \| Mortgage loans \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	0	0
Residential real estate
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	343
Nonaccrual Including 90 Days or More Past Due	1,987	2,743
Total Past Due and Nonaccrual	4,655	6,886
Current	464,528	486,258
Total Loans	469,183	493,144
Residential real estate \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	1,168	3,053
Residential real estate \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	1,500	747
Residential real estate \| Mortgage loans
Past Due and Nonaccrual Loans
Total Loans	469,183	493,144
Commercial, industrial and agricultural
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	0
Nonaccrual Including 90 Days or More Past Due	3,830	736
Total Past Due and Nonaccrual	4,027	1,730
Current	1,621,624	677,714
Total Loans	1,625,651	679,444
Commercial, industrial and agricultural \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	178	273
Commercial, industrial and agricultural \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	19	721
Real estate construction and land loans
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	0
Nonaccrual Including 90 Days or More Past Due	1,097	123
Total Past Due and Nonaccrual	1,097	123
Current	80,419	97,188
Total Loans	81,516	97,311
Real estate construction and land loans \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	0	0
Real estate construction and land loans \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	0	0
Installment/consumer loans
Past Due and Nonaccrual Loans
>90 Days Past Due and Accruing	0	0
Nonaccrual Including 90 Days or More Past Due	9	30
Total Past Due and Nonaccrual	209	154
Current	24,744	24,682
Total Loans	24,953	24,836
Installment/consumer loans \| 30-59 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	100	124
Installment/consumer loans \| 60-89 Days Past Due
Past Due and Nonaccrual Loans
Total Past Due and Nonaccrual	$ 100	$ 0

The amount of accrued interest income on non-accrual loans reversed through interest income.

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Recorded investment in financing receivables that are past due and of nonaccrual status as of the balance sheet date.

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Amount of financing receivable 90 days or more past due and still accruing.

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Amount of financing receivable not past due.

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Amount of financing receivable on nonaccrual status.

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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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