Other Borrowings - Summary of Balances of Other Borrowings (Detail) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
---|---|---|
Debt Instrument [Line Items] | ||
Total other borrowings | $ 19,235 | $ 12,328 |
0.05% Fixed Rate Collateralized Borrowings [Member] | ||
Debt Instrument [Line Items] | ||
Other collateralized borrowings, fixed rate, as of September 30, 2016 of 0.05%, payable on October 3, 2016 | $ 19,235 | $ 12,328 |