Loans and Allowance for Loan Losses (Purchased Credit Impaired Loans) (Details) - Purchased Credit Impaired Loans [Member] - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Total loans	$ 38,419,000	$ 48,404,000
Less remaining purchase discount	(11,432,000)	(14,246,000)
Total loans, net of purchase discount	26,987,000	34,158,000
Less: Allowance for loan losses	(156,000)	0
Carrying amount, net of allowance	26,831,000	34,158,000
Commercial Real Estate [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Total loans	21,570,000	24,849,000
Consumer Real Estate [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Total loans	8,411,000	11,108,000
Construction and Land Development [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Total loans	5,394,000	5,731,000
Commercial and Industrial [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Total loans	2,540,000	5,824,000
Consumer and Other [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Total loans	$ 504,000	$ 892,000