Hanmi Financial Corporation Quarterly report pursuant to Section 13 or 15(d)

Loans - Summary of Amortized Cost Basis of Collateral Dependent Loans By Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	$ 37,226	$ 63,114
Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	37,226	63,073
Real Estate \| Retail
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	6,270	6,330
Real Estate \| Hospitality
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	8,941	20,612
Real Estate \| Other
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	8,137	8,410
Real Estate \| Total commercial property loans
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	23,348	35,352
Real Estate \| Construction
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	11,046	24,854
Real Estate \| Residential/Consumer Loans
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost	$ 2,832	2,867
Commercial and Industrial
Loans And Leases Receivable Disclosure [Line Items]
Amortized Cost		$ 41