XML 68 R55.htm IDEA: XBRL DOCUMENT v3.8.0.1
Loans and Allowance for Credit Losses - Purchased credit-impaired loans (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Purchased credit impaired loans $ 6,366 $ 5,269
Contractually required payments receivable on PCI loans at acquisition: 6,954 5,717
Cash flows expected to be collected at acquisition 1,070 3,715
Purchased Credit Impaired Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Purchased credit impaired loans 383 612
Contractually required payments receivable on PCI loans at acquisition: 0 982
Fair value of acquired loans at acquisition 0 631
Commercial | Purchased Credit Impaired Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Purchased credit impaired loans 383 612
Contractually required payments receivable on PCI loans at acquisition: 0 982
Cash flows expected to be collected at acquisition $ 0 $ 693