XML 54 R44.htm IDEA: XBRL DOCUMENT v3.19.1
Securities - Additional Information (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
security
Dec. 31, 2018
USD ($)
security
Mar. 31, 2018
USD ($)
Jan. 01, 2018
USD ($)
Debt Securities, Available-for-sale [Line Items]        
Number of debt securities in unrealized loss position | security 54 65    
Securities pledged for regulatory and legal requirements $ 214,100 $ 236,000    
ASU No. 2016-01 | Retained Earnings        
Debt Securities, Available-for-sale [Line Items]        
Reclassification of net unrealized gains on equity securities     $ 862 $ 900
ASU No. 2016-01 | AOCI Attributable to Parent        
Debt Securities, Available-for-sale [Line Items]        
Reclassification of net unrealized gains on equity securities     $ (862) $ (900)