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Fair Value of Financial Instruments - Hierarchy Table - Noncrecurring Basis (Details) - Nonrecurring - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Fair Value Disclosures    
Financial assets, impaired loans $ 1,569 $ 1,445
Level 1    
Fair Value Disclosures    
Financial assets, impaired loans 0 0
Level 2    
Fair Value Disclosures    
Financial assets, impaired loans 0 0
Level 3    
Fair Value Disclosures    
Financial assets, impaired loans $ 1,569 $ 1,445