Basis of Presentation and Significant Accounting Policies - Schedule of Maturity Dates For FHLB Funding Agreements (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 590,500
Maturing On January 15, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 50,000
FHLB interest rate	0.324%
Maturing On February 12 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 25,000
FHLB interest rate	0.297%
Maturing On May 17 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 8,000
FHLB interest rate	0.00%
Maturing On November 15, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 20,000
FHLB interest rate	0.486%
Maturing On December 15, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 100,000
FHLB interest rate	0.306%
Maturing On January 12, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 50,000
FHLB interest rate	0.514%
Maturing On June 26 2025
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 125,000
FHLB interest rate	0.57%
Maturing On September 11 2025
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 12,500
FHLB interest rate	0.67%
Maturing On January 16, 2026
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
FHLB advances	$ 200,000
FHLB interest rate	0.27%