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Purchased Loans - Changes in Restructured Loans (Details) - Purchased $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) loan
Number of Loans |  |
Beginning balance (loans) | loan | 54 | 54
Additional advances or loans with concessions (loans) | loan | 13 | 5
Reclassified from nonperforming (loans) | loan | 1 | 14
Reclassified as nonperforming (loans) | loan | (14) | (11)
Paid in full (loans) | loan | (5) | (7)
Charge-offs (loans) | loan | (1) | (1)
Principal paydowns (loans) | loan | 0 | 0
Measurement period adjustment on recently acquired loans (loans) | loan |  | 0
Ending balance (loans) | loan | 48 | 54
Recorded Investment |  |
Beginning balance | $ | $ 7,275 | $ 7,495
Additional advances or loans with concessions | $ | 5,378 | 3,168
Reclassified as performing | $ | 74 | 1,931
Reclassified as nonperforming | $ | (2,563) | (1,964)
Paid in full | $ | (978) | (370)
Charge-offs | $ | (3) | (101)
Principal paydowns | $ | (496) | (508)
Measurement period adjustment on recently acquired loans | $ |  | (2,376)
Ending balance | $ | $ 8,687 | $ 7,275

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