Purchased Loans - Changes in Restructured Loans (Details) - Purchased loans $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) loan
Number of Loans
Total, beginning balance (loans) | loan	54
Additional advances or loans with concessions (loans) | loan	13
Reclassified as performing restructured loans (loans) | loan	1
Reclassified to nonperforming loans (loans) | loan	(13)
Paid in full (loans) | loan	(2)
Charge-offs (loans) | loan	(1)
Principal paydowns (loans) | loan	0
Total, ending balance (loans) | loan	52
Recorded Investment
Total, beginning balance | $	$ 7,275
Additional advances or loans with concessions | $	5,159
Reclassified as performing restructured loan | $	74
Reclassified to nonperforming loans | $	(2,489)
Paid in full | $	(422)
Charge-offs | $	(3)
Principal paydowns | $	(444)
Total, ending balance | $	$ 9,150