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Other real estate owned (Tables)
12 Months Ended
Dec. 31, 2020
Real Estate [Abstract]  
Schedule of Other Real Estate Owned The following table summarizes the other real estate owned for the year ended December 31, 2020, 2019, and 2018: 
Year Ended
December 31,
 202020192018
Balance at beginning of period$18,939 $12,643 $16,442 
Transfers from loans2,746 5,487 2,138 
Transfers (to) from premises and equipment (841)4,290 — 
Proceeds from sale of other real estate owned(6,937)(3,860)(4,819)
Gain on sale of other real estate owned354 1,058 271 
Loans provided for sales of other real estate owned (305)(166)(1,019)
Write-downs and partial liquidations(1,845)(513)(370)
Balance at end of period$12,111 $18,939 $12,643