Business Impact Of Covid-19 - Summary of Loans Funded under PPPLF (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) Loans
Number of Loans | Loans	272
Long-term Debt, Gross	$ 72.5
PPP Loans [Member]
Long-term Debt, Gross	$ 4.4
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	16.00%
Principal Balance as a Percentage of Loans	5.00%
Dental services [Member]
Number of Loans | Loans	148
Long-term Debt, Gross	$ 15.2
Dental services [Member] | PPP Loans [Member]
Number of Loans as a Percentage of Loans	54.00%
Principal Balance as a Percentage of Loans	21.00%
Dental services [Member] | Gross Loans [Member]
Number of Loans as a Percentage of Loans	9.00%
Principal Balance as a Percentage of Loans	1.00%
Contractors [Member]
Number of Loans | Loans	24
Long-term Debt, Gross	$ 13.7
Contractors [Member] | PPP Loans [Member]
Number of Loans as a Percentage of Loans	9.00%
Principal Balance as a Percentage of Loans	19.00%
Contractors [Member] | Gross Loans [Member]
Number of Loans as a Percentage of Loans	1.00%
Principal Balance as a Percentage of Loans	1.00%
Other [Member]
Number of Loans | Loans	100
Long-term Debt, Gross	$ 43.6
Other [Member] | PPP Loans [Member]
Number of Loans as a Percentage of Loans	37.00%
Principal Balance as a Percentage of Loans	60.00%
Other [Member] | Gross Loans [Member]
Number of Loans as a Percentage of Loans	6.00%
Principal Balance as a Percentage of Loans	3.00%