v3.8.0.1
Loans - Accretable Yield or Income Expected to be Collected on Purchased Credit Impaired Loans (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Receivables [Abstract]    
Beginning balance $ 850 $ 289
Accretion of income (74) (108)
Reclassifications from nonaccretable difference   66
Acquisition   603
Disposals (26)  
Ending balance $ 750 $ 850