Purchased Loans - Changes in Restructured Loans (Details) - Purchased loans $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) loan
Number of Loans
Total, beginning balance (loans) | loan	48
Additional advances or loans with concessions (loans) | loan	1
Reclassified to nonperforming loans (loans) | loan	(1)
Principal paydowns (loans) | loan	0
Total, ending balance (loans) | loan	48
Recorded Investment
Total, beginning balance | $	$ 8,687
Additional advances or loans with concessions | $	364
Reclassified to nonperforming loans | $	(1,317)
Principal paydowns | $	(81)
Total, ending balance | $	$ 7,653