Business Description	9 Months Ended
Sep. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business Description	Note 1. Business Description OP Bancorp (the “Company”) is a California corporation whose common stock is quoted on the Nasdaq Global Market under the ticker symbol, “OPBK.” The Company was formed to acquire 100% of the voting equity of Open Bank (the “Bank”) and commenced operation as a bank holding company on June 1, 2016. This transaction was treated as an internal reorganization as all shareholders of the Bank became shareholders of the Company. The Company has no operations other than ownership of the Bank. The Bank is a California state-chartered and FDIC-insured financial institution, which began its operations on June 10, 2005. Headquartered in downtown Los Angeles, California, the Company operates primarily in the traditional banking business arena that includes accepting deposits and making loans and investments. The Company’s primary deposit products are demand and time deposits, and the primary lending products are commercial business loans to small to medium sized businesses. The Company is operating with nine full service branches, eight of which are located in California, in Downtown Los Angeles, Los Angeles Fashion District, Los Angeles Koreatown, Gardena, Buena Park and Santa Clara. The Company opened a ninth full service branch in Carrollton, Texas in April, 2019. The Company also has four loan production offices in Atlanta, Georgia, Aurora, Colorado, and Lynwood and Seattle, Washington. On March 27, 2018, the Company completed its initial public offering of common stock, pursuant to which an aggregate of 2,300,000 shares of its common stock were sold at a public offering price of $11.00 per share, for aggregate net proceeds of approximately $22.6 million, after deducting underwriter discounts and commissions paid by it of approximately $1.7 million and other offering expenses of approximately $925,000.

Business Description

9 Months Ended

Sep. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Note 1. Business Description

OP Bancorp (the “Company”) is a California corporation whose common stock is quoted on the Nasdaq Global Market under the ticker symbol, “OPBK.” The Company was formed to acquire 100% of the voting equity of Open Bank (the “Bank”) and commenced operation as a bank holding company on June 1, 2016. This transaction was treated as an internal reorganization as all shareholders of the Bank became shareholders of the Company. The Company has no operations other than ownership of the Bank. The Bank is a California state-chartered and FDIC-insured financial institution, which began its operations on June 10, 2005. Headquartered in downtown Los Angeles, California, the Company operates primarily in the traditional banking business arena that includes accepting deposits and making loans and investments. The Company’s primary deposit products are demand and time deposits, and the primary lending products are commercial business loans to small to medium sized businesses. The Company is operating with nine full service branches, eight of which are located in California, in Downtown Los Angeles, Los Angeles Fashion District, Los Angeles Koreatown, Gardena, Buena Park and Santa Clara. The Company opened a ninth full service branch in Carrollton, Texas in April, 2019. The Company also has four loan production offices in Atlanta, Georgia, Aurora, Colorado, and Lynwood and Seattle, Washington.

On March 27, 2018, the Company completed its initial public offering of common stock, pursuant to which an aggregate of 2,300,000 shares of its common stock were sold at a public offering price of $11.00 per share, for aggregate net proceeds of approximately $22.6 million, after deducting underwriter discounts and commissions paid by it of approximately $1.7 million and other offering expenses of approximately $925,000.