XML 13 R58.htm IDEA: XBRL DOCUMENT v3.19.3
Mortgage Servicing Rights - Summary of Estimated Future Amortization Expense for Mortgage Servicing Rights (Detail)
$ in Thousands
Sep. 30, 2019
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2019 $ 465
2020 436
2021 407
2022 378
2023 347
Thereafter 168
Total $ 2,201