Commitments and Contingencies - Schedule of Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Other commitment	$ 884,575	$ 900,804
Commitments to sell loans
Other Commitments [Line Items]
Other commitment	9,483	5,400
Commitments to extend credit
Other Commitments [Line Items]
Other commitment	840,090	859,212
Standby letters of credit
Other Commitments [Line Items]
Other commitment	$ 35,002	$ 36,192

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant