Loans and Allowance - Related parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance at beginning of year	$ 504	$ 403
Additions	582	468
Repayments	(715)	(367)
Balance at end of year	$ 371	$ 504