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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2022
Goodwill [Line Items] |  |  |  |  |
Accumulated impairment charges | $ 261,186 |  | $ 261,186 |  | $ 261,186
Amortization expense on intangible assets | 10,517 | $ 11,953 | 20,859 | $ 33,499 |
Future amortization expense [Abstract] |  |  |  |  |
Future amortization expense for the remainder 2023 | 21,641 |  | 21,641 |  |
Future amortization expense 2024 | 40,271 |  | 40,271 |  |
Future amortization expense 2025 | 16,924 |  | 16,924 |  |
Future amortization expense 2026 | 15,024 |  | 15,024 |  |
Future amortization expense 2027 | $ 13,937 |  | $ 13,937 |  |
SGK Brand Solutions |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Percentage of fair value in excess of carrying amount | 9.00% |  | 9.00% |  |
Memorialization |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Accumulated impairment charges | $ 5,000 |  | $ 5,000 |  | 5,000
Industrial Technologies |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Accumulated impairment charges | 23,946 |  | 23,946 |  | 23,946
SGK Brand Solutions |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Accumulated impairment charges | $ 232,240 |  | $ 232,240 |  | $ 232,240

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