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FAIR VALUE MEASUREMENTS - Fair Values and Carrying Amounts (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financial Assets
Securities available for sale	$ 641,574	$ 663,230
Financial Liabilities
FRB PPPLF	228,015	348,118
Level 1
Financial Assets
Cash and cash equivalents	70,763	56,910
Securities available for sale	0
FHLB stock	0
Net loans	0
Accrued interest receivable	0
Cash surrender value of bank-owned life insurance policies	0
Derivative assets	0
Financial Liabilities
Short-term other borrowings	0
FHLB advances	0
Derivative liabilities	0
Level 1 | Bank Non-maturity Deposits [Member]
Financial Liabilities
Deposits	0
Level 1 | Bank Time Deposits [Member]
Financial Liabilities
Deposits	0
Level 1 | Federal Reserve Bank Advances
Financial Liabilities
FRB PPPLF	0
Level 1 | Subordinated borrowings
Financial Liabilities
Subordinated borrowings	0
Level 2
Financial Assets
Cash and cash equivalents	0
Securities available for sale	641,574	663,230
FHLB stock	20,265	20,679
Net loans	0
Accrued interest receivable	3,215	3,294
Cash surrender value of bank-owned life insurance policies	76,896	75,863
Derivative assets	28,753	6,791
Financial Liabilities
Short-term other borrowings	33,846	44,831
FHLB advances	387,053	425,989
Derivative liabilities	(32,367)	8,102
Level 2 | Bank Non-maturity Deposits [Member]
Financial Liabilities
Deposits	2,090,727	1,751,481
Level 2 | Bank Time Deposits [Member]
Financial Liabilities
Deposits	668,803	932,886
Level 2 | Federal Reserve Bank Advances
Financial Liabilities
FRB PPPLF	131,236
Level 2 | Subordinated borrowings
Financial Liabilities
Subordinated borrowings	59,879	59,920
Level 3
Financial Assets
Cash and cash equivalents	0
Securities available for sale	0
FHLB stock	0
Net loans	2,698,382	2,634,147
Accrued interest receivable	0
Cash surrender value of bank-owned life insurance policies	0
Derivative assets	63	59
Financial Liabilities
Short-term other borrowings	0
FHLB advances	0
Derivative liabilities	(126)	84
Level 3 | Bank Non-maturity Deposits [Member]
Financial Liabilities
Deposits	0
Level 3 | Bank Time Deposits [Member]
Financial Liabilities
Deposits	0
Level 3 | Federal Reserve Bank Advances
Financial Liabilities
FRB PPPLF	0
Level 3 | Subordinated borrowings
Financial Liabilities
Subordinated borrowings	0
Carrying Amount
Financial Assets
Cash and cash equivalents	70,673	56,910
Securities available for sale	641,574	663,230
FHLB stock	20,265	20,679
Net loans	2,712,908	2,625,739
Accrued interest receivable	3,215	3,294
Cash surrender value of bank-owned life insurance policies	76,896	75,863
Derivative assets	28,816	6,850
Financial Liabilities
Short-term other borrowings	33,846	44,832
FHLB advances	381,781	426,564
Derivative liabilities	(32,493)	8,186
Carrying Amount | Bank Non-maturity Deposits [Member]
Financial Liabilities
Deposits	2,016,736	1,763,116
Carrying Amount | Bank Time Deposits [Member]
Financial Liabilities
Deposits	678,126	932,635
Carrying Amount | Federal Reserve Bank Advances
Financial Liabilities
FRB PPPLF	131,236
Carrying Amount | Subordinated borrowings
Financial Liabilities
Subordinated borrowings	59,879	59,920
Total Fair Value
Financial Assets
Cash and cash equivalents	70,763	56,910
Securities available for sale	641,574	663,230
FHLB stock	20,265	20,679
Net loans	2,698,382	2,634,147
Accrued interest receivable	3,215	3,294
Cash surrender value of bank-owned life insurance policies	76,896	75,863
Derivative assets	28,816	6,850
Financial Liabilities
Short-term other borrowings	33,846	44,831
FHLB advances	387,053	425,989
Derivative liabilities	(32,493)	8,186
Total Fair Value | Bank Non-maturity Deposits [Member]
Financial Liabilities
Deposits	2,090,727	1,751,481
Total Fair Value | Bank Time Deposits [Member]
Financial Liabilities
Deposits	668,803	932,886
Total Fair Value | Federal Reserve Bank Advances
Financial Liabilities
FRB PPPLF	131,236
Total Fair Value | Subordinated borrowings
Financial Liabilities
Subordinated borrowings	$ 59,879	$ 59,920

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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