FHLB Borrowings (Details) - Schedule of components of FHLB borrowings and weighted average interest rates - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
By type of borrowing:
FHLB borrowings (in Dollars)	$ 500,293	$ 600,001
Weighted average interest rates	1.96%	2.59%
By remaining period to maturity:
Less than 1 year (in Dollars)	$ 400,000	$ 405,000
Less than 1 year	1.84%	2.57%
1 year through less than 2 years (in Dollars)	$ 62,000	$ 110,000
1 year through less than 2 years	2.26%	2.75%
2 years through less than 3 years (in Dollars)	$ 10,737	$ 60,000
2 years through less than 3 years	2.45%	2.27%
3 years through less than 4 years (in Dollars)	$ 25,000
3 years through less than 4 years	2.92%
4 years through less than 5 years (in Dollars)		$ 25,000
4 years through less than 5 years		2.92%
After 5 years (in Dollars)	$ 2,882
After 5 years	2.43%
Total FHLB borrowings (in Dollars)	$ 500,619	600,000
Fair value (discount) premium	(326)	1
FHLB borrowings, net	$ 500,293	$ 600,001