FAIR VALUE - Schedule of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Assets
Interest-bearing deposits with banks	$ 30,493	$ 45,664
Federal funds sold	0	16,995
Restricted investments in bank stock	16,184	10,842
AFS securities	490,386	465,844
Carrying Amount
Financial Assets
Cash and due from banks	25,969	26,156
Interest-bearing deposits with banks	30,493	45,664
Federal funds sold		16,995
Restricted investments in bank stock	16,184	10,842
AFS securities	490,386	465,844
Loans held for sale	9,364	3,340
Loans, net of allowance for loan losses	1,629,675	1,233,643
Interest rate lock commitments on residential mortgages	103
Accrued interest receivable	6,040	5,927
Financial Liabilities
Deposits	1,875,522	1,558,756
Short-term borrowings	154,869	64,069
Long-term debt	63,067	83,450
Subordinated notes	31,847	31,859
Accrued interest payable	879	1,301
Fair Value
Financial Liabilities
Subordinated notes		31,256
Fair Value | Fair Value
Financial Assets
Cash and due from banks	25,969	26,156
Interest-bearing deposits with banks	30,493	45,664
Federal funds sold		16,995
AFS securities	490,386	465,844
Loans held for sale	9,364	3,413
Loans, net of allowance for loan losses	1,652,788	1,229,645
Interest rate lock commitments on residential mortgages	103
Accrued interest receivable	6,040	5,927
Financial Liabilities
Deposits	1,876,555	1,555,912
Short-term borrowings	154,869	64,069
Long-term debt	63,405	82,951
Subordinated notes	33,953
Accrued interest payable	879	1,301
Fair Value | Level 1
Financial Assets
Cash and due from banks	25,969	26,156
Interest-bearing deposits with banks	30,493	45,664
Federal funds sold		16,995
AFS securities	0	0
Loans held for sale	0	0
Loans, net of allowance for loan losses	0	0
Interest rate lock commitments on residential mortgages	0
Accrued interest receivable	0	0
Financial Liabilities
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Fair Value | Level 2
Financial Assets
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Federal funds sold		0
AFS securities	466,107	458,635
Loans held for sale	9,364	3,413
Loans, net of allowance for loan losses	0	0
Interest rate lock commitments on residential mortgages	0
Accrued interest receivable	1,863	2,853
Financial Liabilities
Deposits	1,876,555	1,555,912
Short-term borrowings	154,869	64,069
Long-term debt	63,405	82,951
Subordinated notes	33,953	31,256
Accrued interest payable	879	1,301
Fair Value | Level 3
Financial Assets
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Federal funds sold		0
AFS securities	24,279	7,209
Loans held for sale	0	0
Loans, net of allowance for loan losses	1,652,788	1,229,645
Interest rate lock commitments on residential mortgages	103
Accrued interest receivable	4,177	3,074
Financial Liabilities
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Accrued interest payable	$ 0	$ 0