XML 31 R70.htm IDEA: XBRL DOCUMENT v3.19.3
Securities Held-to-Maturity - Schedule of Unrealized Gains, Losses and Fair Value of Securities Held-to-Maturity (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]    
Held-to-maturity cost or amortized cost $ 17,796 $ 20,180
Held-to-maturity gross unrealized gains 74 5
Held-to-maturity gross unrealized losses (77) (1,679)
Held-to-maturity fair value $ 17,793 $ 18,506