Loans and Allowance - (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) contract loan	Dec. 31, 2018 USD ($) contract loan
Schedule of Available-for-sale Securities [Line Items]
Number of new loans modified as TDRs | loan	0	0
Number of TDRs accounts | contract	1	2
Amount of recorded investment in new troubled debt restructurings, totaled	$ 41,000	$ 248,000
Amount of interest that would have been accrued from non performing financial receivable, totaled	$ 100,000	$ 200,000
Non-performing TDRs
Schedule of Available-for-sale Securities [Line Items]
Number of TDRs accounts | contract	1	1
Amount of recorded investment in new troubled debt restructurings, totaled	$ 40,951,000	$ 43,521,000
Performing
Schedule of Available-for-sale Securities [Line Items]
Number of TDRs accounts | contract		1
Amount of recorded investment in new troubled debt restructurings, totaled		$ 204,500,000
Consumer
Schedule of Available-for-sale Securities [Line Items]
Number of TDRs accounts | contract	1	1
Amount of recorded investment in new troubled debt restructurings, totaled	$ 41,000	$ 44,000
Amount of consumer and indirect loans, outstanding	40,951
Amount of consumer and indirect loans, specific reserves	$ 14,655
Number Of Loan Consumer And Indirect Loans | contract	1