Annual report pursuant to Section 13 and 15(d)

EARNINGS PER SHARE (Details)

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EARNINGS PER SHARE (Details) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Earnings Per Share [Abstract]      
Net income (loss) attributable to Matthews shareholders $ 2,910 $ (87,155) $ (37,988)
Weighted-average shares outstanding (in thousands):      
Basic shares (in shares) 31,696 31,190 31,416
Effect of dilutive securities (in shares) 291 0 0
Diluted shares (in shares) 31,987 31,190 31,416