Borrowed Funds and Mandatorily Redeemable Securities (Details 2) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Short-term borrowings:
Short-term borrowings	$ 150,641	$ 145,893
Short-term borrowings, weighted average interest rate	0.08%	0.42%
Federal funds purchased
Short-term borrowings:
Short-term borrowings	$ 0	$ 0
Short-term borrowings, weighted average interest rate	0.00%	0.00%
Security repurchase agreements
Short-term borrowings:
Short-term borrowings	$ 143,564	$ 120,459
Short-term borrowings, weighted average interest rate	0.08%	0.23%
Commercial paper
Short-term borrowings:
Short-term borrowings	$ 4,766	$ 3,993
Short-term borrowings, weighted average interest rate	0.13%	0.29%
Federal Home Loan Bank advances
Short-term borrowings:
Short-term borrowings	$ 0	$ 20,000
Short-term borrowings, weighted average interest rate	0.00%	1.61%
Other short-term borrowings
Short-term borrowings:
Short-term borrowings	$ 2,311	$ 1,441
Short-term borrowings, weighted average interest rate	0.00%	0.00%