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LOANS, ALLOWANCE FOR LOAN LOSSES AND IMPAIRED LOANS - Troubled Debt Restructurings (Details) - contract	Mar. 31, 2021	Mar. 31, 2020
Considered in Default at Period End:
Number of Modifications	1	5
Recorded Investment	19,000	1,892,000
Commercial/agriculture real estate
Considered in Default at Period End:
Number of Modifications	0	5
Recorded Investment	0	1,892,000
C&I/Agricultural operating
Considered in Default at Period End:
Number of Modifications	0	0
Recorded Investment	0	0
Residential mortgage
Considered in Default at Period End:
Number of Modifications	1	0
Recorded Investment	19,000	0
Consumer installment
Considered in Default at Period End:
Number of Modifications	0	0
Recorded Investment	0	0

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