v3.19.1
Investment Securities - Pledged Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Amortized Cost    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities pledged $ 22,745 $ 21,838
Fair Value    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities pledged 22,524 21,929
Securities sold under agreements to repurchase | Amortized Cost    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities pledged 16,032 14,405
Securities sold under agreements to repurchase | Fair Value    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities pledged 15,862 14,475
Federal Home Loan Bank advances | Amortized Cost    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities pledged 6,713 7,433
Federal Home Loan Bank advances | Fair Value    
Assets Sold under Agreements to Repurchase [Line Items]    
Securities pledged $ 6,662 $ 7,454