Loans and Allowance for Loan Losses - Categories of Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Categories of impaired loans
Non-accrual loans	$ 34,559	$ 4,754
Non-performing TDRs - 90 days past due		106
Performing TDRs	2,776	2,535
Total impaired loans	$ 37,335	$ 7,395

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant