XML 65 R50.htm IDEA: XBRL DOCUMENT v3.19.1
Loans - Activity in Related Party Loans (Detail)
12 Months Ended
Dec. 31, 2018
USD ($)
Receivables [Abstract]  
Balance outstanding at December 31, 2017 $ 3,117,526
Principal additions 518,154
Principal reductions (567,729)
Balance outstanding at December 31, 2018 $ 3,067,951