Windes Inc., a Long Beach-based accounting firm, has acquired Irvine’s Allen, Haight & Monaghan LLP. Terms weren’t disclosed; the firms will practice under the moniker of Windes.

The combination of Windes’ 40 employees at its Irvine office and the 22 from AH&M will place the new company among the 20 largest accounting firms on the Business Journal’s annual list. The combined firm is comprised of more than 165 people with offices in Irvine, Long Beach, and Los Angeles.

AH&M, which has been in business for more than 32 years, provides a variety of services such as audits and consulting services to closely held and middle market companies. Its managing partner is Lee Haight.