Purchased Loans - Changes in Restructured Loans (Details) - Purchased loans $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) loan
Number of Loans
Total, beginning balance | loan	48
Additional advances or loans with concessions | loan	3
Reclassified as performing restructured loan | loan	2
Reclassified to nonperforming loans | loan	(4)
Paid in full | loan	(5)
Charge-offs | loan	(1)
Principal paydowns | loan	0
Total, ending balance | loan	43
Recorded Investment
Total, beginning balance | $	$ 8,687
Additional advances or loans with concessions | $	1,411
Reclassified as performing restructured loan | $	115
Reclassified to nonperforming loans | $	(2,485)
Paid in full | $	(1,310)
Charge-offs | $	(205)
Principal paydowns | $	(221)
Total, ending balance | $	$ 5,992