Borrowings - Schedule of Collateral Type and Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Short-term Debt [Line Items]
Fair value of pledged securities - overnight and continuous:	$ 137,268	$ 94,354	$ 246,829

Fair value of securities pledged as collateral against securities sold under agreement to repurchase.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226013-175313

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