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Troubled Debt Restructurings (Tables)
3 Months Ended
Mar. 31, 2018
Troubled Debt Restructurings [Abstract]  
Summary of concession at the time of modification and the recorded investment in our TDRs before and after their modification
 
For the three months ended March 31, 2018
Pre-Post-
modificationmodification
RenewalsReducedConvertedMaturityTotaloutstandingoutstanding
deemed aor deferredto interestdateNumberrecordedrecorded
(dollars in thousands)     concession     payments     only     extensions     of loans     investment     investment
Consumer
Real estate2---2$549$669
Total loans2---2$     549$     669
 
For the three months ended March 31, 2017
Pre-Post-
modificationmodification
RenewalsReducedConvertedMaturityTotaloutstandingoutstanding
deemed aor deferredto interestdateNumberrecordedrecorded
(dollars in thousands)concessionpaymentsonlyextensionsof loansinvestmentinvestment
Commercial
Business1---1$149$149
Total loans1---1$149$149