BORROWINGS - Long-term Borrowings (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Federal Home Loan Bank Advance, ten-year, putable six-month Bermudan fixed-rate, Due March 4, 2030
Debt Instrument [Line Items]
Debt instrument, term	10 years
Debt instrument, interest rate, stated percentage (as a percent)	0.39%
Federal Home Loan Bank Advances
Debt Instrument [Line Items]
Long-term Federal Home Loan Bank advances	$ 75.0	$ 75.0

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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