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Impairment of Assets Held for Sale (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Sep. 30, 2019 | Jan. 31, 2020
Impairment of assets held for sale | $ 37,902 |  |
Disposal Groups [Member] |  |  |
Non-cash impairment charge | 24,092 |  |
Total assets held for sale, net of valuation allowance | 23,941 |  |
Total liabilities held for sale | 14,274 |  |
Impairment of assets held for sale | 37,902 |  |
Disposal Groups [Member] | Level 3 [Member] |  |  |
Net assets held for sale | $ 9,667 |  |
Disposal Groups [Member] | AURELIUS Group [Member] |  |  |
Purchase price |  |  | $ 23,400
Promissory note |  |  | $ 6,000
Disposal Groups [Member] | AURELIUS Group [Member] | Germany, Poland And Bulgaria [Member] |  |  |
Sales |  | $ 80,000 |

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