Loans and Allowance for Credit Losses - Additional Information II (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) contract	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) contract
Interest on nonaccrual loans			$ 2,600			$ 2,700
Number of TDR loans | contract				11		10
Troubled Debt Restructurings			19,372			$ 10,089
Number of loans - restructured accruing	0	1		7	7	7
Restructured accruing		$ 309	10,522			$ 8,568
Number of defaulted loans charged-off | contract				2
Number of loans paydowns | loan	0
Non-Performing Loans
TDRs	$ 6,300	$ 900	$ 6,300	$ 6,300	$ 6,300	$ 900