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

Fair Value Measurements - Additional Information (Detail) - USD ($)	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 6,425,000	$ 12,833,000	$ 2,874,000	$ 4,871,000	$ 4,158,000	$ 5,451,000
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance of Non-accrual Non-PCI loans reviewed individually for amount of impairment	100,000
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unpaid principal balance of Non-accrual Non-PCI loans reviewed collectively for amount of impairment	100,000
Fair Value, Inputs, Level 2 [Member] \| Non-recurring Basis [Member] \| Non-Performing Loans Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0		0
Fair Value, Inputs, Level 2 [Member] \| Non-recurring Basis [Member] \| Small Business Administration Loans Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 6,400,000		$ 2,900,000