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GOODWILL AND INTANGIBLE ASSETS (Tables) | 6 Months Ended
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Mar. 31, 2023
GOODWILL AND INTANGIBLE ASSETS |
Schedule of changes in goodwill | The following is a rollforward of the Company’s goodwill: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2022 |  | Acquisitions | ​ | ​ | Impairment | ​ | March 31, 2023
DSA | ​ | $ | 91,458 | ​ | $ | 2,828 | ​ | $ | — | ​ | $ | 94,286
RMS | ​ |  | 302,372 | ​ |  | — | ​ |  | — | ​ |  | 302,372
Gross Carrying Amount | ​ | ​ | 393,830 | ​ | ​ | 2,828 | ​ | ​ | — | ​ | ​ | 396,658
Accumulated impairment loss - RMS | ​ | ​ | (236,005) | ​ |  | — | ​ |  | (66,367) | ​ |  | (302,372)
Goodwill | ​ | $ | 157,825 | ​ | $ | 2,828 | ​ | $ | (66,367) | ​ | $ | 94,286
​
Schedule of intangible assets | The following table displays intangible assets, net by major class:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2023
​ | ​ | Carrying | ​ | Accumulated | ​ | Carrying
​ |  | Amount, Gross |  | Amortization |  | Amount, Net
Customer relationships | ​ | $ | 317,061 | ​ | $ | (40,821) | ​ | $ | 276,240
Intellectual property | ​ |  | 56,591 | ​ |  | (9,037) | ​ |  | 47,554
Non-compete agreements | ​ | ​ | 2,410 | ​ | ​ | (1,100) | ​ | ​ | 1,310
Other | ​ | ​ | 2,396 | ​ | ​ | (1,239) | ​ | ​ | 1,157
​ | ​ | $ | 378,458 | ​ | $ | (52,197) | ​ | $ | 326,261
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2022
​ | ​ | Carrying | ​ | Accumulated | ​ | Carrying
​ |  | Amount, Gross |  | Amortization |  | Amount, Net
Customer relationships | ​ | $ | 318,896 | ​ | $ | (26,990) | ​ | $ | 291,906
Intellectual property | ​ |  | 56,997 | ​ |  | (5,767) | ​ |  | 51,230
Non-compete agreements | ​ | ​ | 2,410 | ​ | ​ | (872) | ​ | ​ | 1,538
Other | ​ | ​ | 2,396 | ​ | ​ | (1,184) | ​ | ​ | 1,212
​ | ​ | $ | 380,699 | ​ | $ | (34,813) | ​ | $ | 345,886
​

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