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EMPLOYEE BENEFIT PLANS
 6 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS
Defined benefit pension and other post-retirement benefit plan expenses are as follows:
 Three Months Ended March 31,Six Months Ended March 31,
2026202520262025
Service cost$94 $— $188 $— 
Interest cost525 645 1,050 1,291 
Expected return on plan assets(587)(890)(1,175)(1,780)
Amortization:    
Prior service cost1,609 — 3,218 — 
Recognized actuarial loss361 285 722 570 
Net periodic benefit plan expense$2,002 $40 $4,003 $81 
The defined benefit pension and other post-retirement benefit plan expenses in the above table were recorded in Other, net on the Condensed Consolidated Statement of Operations and Comprehensive Income (Loss), except for service costs, which were recorded in selling, general and administrative expenses.
Included in the above table, is the new retiree medical plan for certain Griffon executives, which was effective August 5, 2025. Under the plan, eligible retirees and their covered spouses are provided company-paid medical, prescription drug and dental coverage through the Company's group health plans (or if such coverage cannot be provided, an equivalent benefit), along with reimbursement for certain uncovered expenses.
During the quarter and six months ended March 31, 2026, the Company recognized a benefit plan expense of $1,794 and $3,588, respectively, which includes a non-cash charge of $1,609 and $3,218, respectively, related to the implementation of this retiree medical plan. The Company expects to record non-cash charges related to implementation of the plan of $5,362 in 2026.
During 2025, the Company completed the termination of the Hunter Pension Plan (the "Plan"). In connection with such termination the Plan made lump sum payments of $4,830, and placed $10,859 of assets with an annuity provider, based on the elections of the participants. Additionally, excess cash of $6,100 was transferred to the Company, a portion of which was transferred directly to a qualified replacement plan. In 2025, the Company recognized a gain on the termination of the Plan of $2,181, net of excise taxes, in the Consolidated Statements of Operations and Comprehensive Income (Loss).