Business Impact Of Covid-19 - Summary of Loans Funded under PPPLF (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($) Loans
Number of Loans | Loans	581
Long-term Debt, Gross	$ 194.5
PPP Loans [Member]
Long-term Debt, Gross	$ 71.6
Number of Loans as a Percentage of Loans	100.00%
Principal Balance as a Percentage of Loans	100.00%
Gross Loans [Member]
Number of Loans as a Percentage of Loans	30.00%
Principal Balance as a Percentage of Loans	14.00%
Dental services [Member]
Number of Loans | Loans	292
Long-term Debt, Gross	$ 19.4
Dental services [Member] | PPP Loans [Member]
Number of Loans as a Percentage of Loans	50.00%
Principal Balance as a Percentage of Loans	10.00%
Dental services [Member] | Gross Loans [Member]
Number of Loans as a Percentage of Loans	15.00%
Principal Balance as a Percentage of Loans	1.00%
Contractors [Member]
Number of Loans | Loans	69
Long-term Debt, Gross	$ 60.7
Contractors [Member] | PPP Loans [Member]
Number of Loans as a Percentage of Loans	12.00%
Principal Balance as a Percentage of Loans	31.00%
Contractors [Member] | Gross Loans [Member]
Number of Loans as a Percentage of Loans	4.00%
Principal Balance as a Percentage of Loans	5.00%
Other [Member]
Number of Loans | Loans	220
Long-term Debt, Gross	$ 114.4
Other [Member] | PPP Loans [Member]
Number of Loans as a Percentage of Loans	38.00%
Principal Balance as a Percentage of Loans	59.00%
Other [Member] | Gross Loans [Member]
Number of Loans as a Percentage of Loans	11.00%
Principal Balance as a Percentage of Loans	8.00%