Federal Home Loan Bank Advances - Schedule of Maturities of Advances and Interest Rates (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Scheduled Maturities
2020	$ 155,000
Weighted Average Rates
2020	2.41%

Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	us-gaap_FederalHomeLoanBankAdvancesWeightedAverageInterestRateMaturingInNextTwelveRollingMonths
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant