Short-Term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Short-term borrowings
Balance as of end of period		$ 93,460
Securities Sold under Agreements to Repurchase
Short-term borrowings
Average daily balance			$ 28
During period			0.54%
Federal Funds Purchased
Short-term borrowings
Balance as of end of period		93,460
Average daily balance	$ 61,709	86,768	$ 33,348
Maximum month-end balance	$ 139,605	$ 112,260	$ 131,260
During period	2.54%	2.18%	1.33%
End of period		2.63%
Federal Home Loan Bank Advances
Short-term borrowings
Balance as of end of period			$ 30,000
Average daily balance	$ 9,712	$ 82	39,069
Maximum month-end balance	$ 135,000		$ 120,000
During period	2.44%	1.42%	1.28%
End of period			1.42%