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Financial Instruments With Off-Balance-Sheet Risk (Tables)
 12 Months Ended
Dec. 31, 2020
Financial Instruments With Off-Balance-Sheet Risk [Abstract]  
Schedule of Contractual Amount of Financial Instruments with Credit Risk The following table shows financial instruments outstanding whose contract amount represents credit risk at December 31:
 Contract or
Notional Amount
 20202019
(Dollars in thousands)
Commitments to originate loans$61,431 $35,689 
Unused lines of credit132,502 103,623 
Standby and commercial letters of credit3,115 2,308 
Credit card arrangements308 311 
MPF credit enhancement obligation, net (See Note 19)728 687 
Commitment to purchase investment in a real estate limited partnership2,000 3,000 
        Total$200,084 $145,618