Subsequent Events - Additional Information (Detail) - COVID-19 [Member] $ in Billions			3 Months Ended
	Apr. 28, 2020 USD ($) PPPLoan	Mar. 16, 2020	Mar. 31, 2020
Subsequent Event [Line Items]
Deferral loan	$ 2.1
Payment of deferral loan, period	90 days
Treasury Bond [Member]
Subsequent Event [Line Items]
Treasury bond term			10 years
Interest rate			1.00%
Federal Fund [Member]
Subsequent Event [Line Items]
Interest rate			0.50%
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of paycheck protection program loans generated | PPPLoan	8,900
Minimum [Member] | Federal Fund [Member]
Subsequent Event [Line Items]
Interest rate		0.00%	1.00%
Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Total	$ 1.3
Maximum [Member] | Federal Fund [Member]
Subsequent Event [Line Items]
Interest rate		0.25%	1.25%