Borrowed Funds and Mandatorily Redeemable Securities (Details 2) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Short-term borrowings:
Short-term borrowings	$ 145,893	$ 199,344
Short-term borrowings, weighted average interest rate	0.42%	1.30%
Federal funds purchased
Short-term borrowings:
Short-term borrowings	$ 0	$ 10,000
Short-term borrowings, weighted average interest rate	0.00%	2.70%
Security repurchase agreements
Short-term borrowings:
Short-term borrowings	$ 120,459	$ 103,627
Short-term borrowings, weighted average interest rate	0.23%	0.25%
Commercial paper
Short-term borrowings:
Short-term borrowings	$ 3,993	$ 4,325
Short-term borrowings, weighted average interest rate	0.29%	0.29%
Federal Home Loan Bank advances
Short-term borrowings:
Short-term borrowings	$ 20,000	$ 80,000
Short-term borrowings, weighted average interest rate	1.61%	2.57%
Other short-term borrowings
Short-term borrowings:
Short-term borrowings	$ 1,441	$ 1,392
Short-term borrowings, weighted average interest rate	0.00%	0.00%