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Acquisition (Pro Forma) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2018 | Mar. 31, 2017
Business Combinations [Abstract] |  |  |  |
Revenue | $ 54,791,000 | $ 50,963,000 | $ 105,411,000 | $ 105,349
Net loss | $ (340,000) | $ (867,000) | $ (4,916,000) | $ (1,842)

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