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SEGMENT INFORMATION - Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2021 | Mar. 31, 2020
SEGMENT INFORMATION |  |  |  |
Revenue: | $ 18,751 | $ 16,012 | $ 36,636 | $ 28,930
Operating income (loss) | (521) | (195) | (507) | (1,215)
Interest expense | (366) | (392) | (713) | (703)
Other income | 179 | 10 | 179 | 12
Loss before income taxes | (708) | (577) | (1,041) | (1,906)
Services Segment [Member] |  |  |  |
SEGMENT INFORMATION |  |  |  |
Revenue: | 17,902 | 15,191 | 34,934 | 27,333
Operating income (loss) | 3,794 | 2,575 | 6,905 | 3,933
Products Segment [Member] |  |  |  |
SEGMENT INFORMATION |  |  |  |
Revenue: | 849 | 821 | 1,702 | 1,597
Operating income (loss) | (26) | (200) | 141 | (470)
Corporate Segment [Member] |  |  |  |
SEGMENT INFORMATION |  |  |  |
Operating income (loss) | $ (4,289) | $ (2,570) | $ (7,553) | $ (4,678)

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