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BUSINESS COMBINATIONS - Covenant Financial Assets and Liabilities (Details) - USD ($)	Dec. 31, 2020	Sep. 30, 2020	Jul. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
BUSINESS COMBINATIONS
Goodwill	$ 52,505,000			$ 28,388,000	$ 11,942,000
Covenant Financial Inc.
BUSINESS COMBINATIONS
Cash and cash equivalents			$ 97,792,000
Available-for-sale debt securities			10,754,000
Loans receivable			464,236,000
Bank-owned life insurance			11,170,000
Accrued interest receivable			1,922,000
Bank premises and equipment			3,250,000
Foreclosed assets held for sale			860,000
Deferred tax asset, net			1,879,000
Goodwill	$ 24,117,000	$ 24,138,000	24,117,000
Other assets			13,478,000
Deposits			(481,796,000)
Short-term borrowings			(33,950,000)
Long-term borrowings			(30,025,000)
Subordinated debt			(10,091,000)
Accrued interest and other liabilities			(13,474,000)
Estimated excess fair value of assets acquired over liabilities assumed			63,266,000
Federal Home Loan Bank of Pittsburgh stock			2,939,000
Covenant Financial Inc. | Core Deposits
BUSINESS COMBINATIONS
Core deposit intangible			$ 3,144,000

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